diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClient.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClient.java
index ac602861ce0..d8110bd947c 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClient.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClient.java
@@ -40,8 +40,11 @@
 import com.google.longrunning.OperationsClient;
 import com.google.protobuf.Empty;
 import com.google.protobuf.FieldMask;
+import com.google.protobuf.Timestamp;
 import com.google.spanner.admin.database.v1.Backup;
 import com.google.spanner.admin.database.v1.BackupName;
+import com.google.spanner.admin.database.v1.CopyBackupMetadata;
+import com.google.spanner.admin.database.v1.CopyBackupRequest;
 import com.google.spanner.admin.database.v1.CreateBackupMetadata;
 import com.google.spanner.admin.database.v1.CreateBackupRequest;
 import com.google.spanner.admin.database.v1.CreateDatabaseMetadata;
@@ -1548,6 +1551,327 @@ public final UnaryCallable<CreateBackupRequest, Operation> createBackupCallable(
     return stub.createBackupCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Starts copying a Cloud Spanner Backup. The returned backup [long-running
+   * operation][google.longrunning.Operation] will have a name of the format
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+   * and can be used to track copying of the backup. The operation is associated with the
+   * destination backup. The [metadata][google.longrunning.Operation.metadata] field type is
+   * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata]. The
+   * [response][google.longrunning.Operation.response] field type is
+   * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned
+   * operation will stop the copying and delete the backup. Concurrent CopyBackup requests can run
+   * on the same source backup.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
+   *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
+   *   String backupId = "backupId2121930365";
+   *   BackupName sourceBackup = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
+   *   Timestamp expireTime = Timestamp.newBuilder().build();
+   *   Backup response =
+   *       databaseAdminClient.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+   * }
+   * }</pre>
+   *
+   * @param parent Required. The name of the destination instance that will contain the backup copy.
+   *     Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+   * @param backupId Required. The id of the backup copy. The `backup_id` appended to `parent` forms
+   *     the full backup_uri of the form
+   *     `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * @param sourceBackup Required. The source backup to be copied. The source backup needs to be in
+   *     READY state for it to be copied. Once CopyBackup is in progress, the source backup cannot
+   *     be deleted or cleaned up on expiration until CopyBackup is finished. Values are of the
+   *     form: `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * @param expireTime Required. The expiration time of the backup in microsecond granularity. The
+   *     expiration time must be at least 6 hours and at most 366 days from the `create_time` of the
+   *     source backup. Once the `expire_time` has passed, the backup is eligible to be
+   *     automatically deleted by Cloud Spanner to free the resources used by the backup.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
+      InstanceName parent, String backupId, BackupName sourceBackup, Timestamp expireTime) {
+    CopyBackupRequest request =
+        CopyBackupRequest.newBuilder()
+            .setParent(parent == null ? null : parent.toString())
+            .setBackupId(backupId)
+            .setSourceBackup(sourceBackup == null ? null : sourceBackup.toString())
+            .setExpireTime(expireTime)
+            .build();
+    return copyBackupAsync(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Starts copying a Cloud Spanner Backup. The returned backup [long-running
+   * operation][google.longrunning.Operation] will have a name of the format
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+   * and can be used to track copying of the backup. The operation is associated with the
+   * destination backup. The [metadata][google.longrunning.Operation.metadata] field type is
+   * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata]. The
+   * [response][google.longrunning.Operation.response] field type is
+   * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned
+   * operation will stop the copying and delete the backup. Concurrent CopyBackup requests can run
+   * on the same source backup.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
+   *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
+   *   String backupId = "backupId2121930365";
+   *   String sourceBackup = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString();
+   *   Timestamp expireTime = Timestamp.newBuilder().build();
+   *   Backup response =
+   *       databaseAdminClient.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+   * }
+   * }</pre>
+   *
+   * @param parent Required. The name of the destination instance that will contain the backup copy.
+   *     Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+   * @param backupId Required. The id of the backup copy. The `backup_id` appended to `parent` forms
+   *     the full backup_uri of the form
+   *     `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * @param sourceBackup Required. The source backup to be copied. The source backup needs to be in
+   *     READY state for it to be copied. Once CopyBackup is in progress, the source backup cannot
+   *     be deleted or cleaned up on expiration until CopyBackup is finished. Values are of the
+   *     form: `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * @param expireTime Required. The expiration time of the backup in microsecond granularity. The
+   *     expiration time must be at least 6 hours and at most 366 days from the `create_time` of the
+   *     source backup. Once the `expire_time` has passed, the backup is eligible to be
+   *     automatically deleted by Cloud Spanner to free the resources used by the backup.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
+      InstanceName parent, String backupId, String sourceBackup, Timestamp expireTime) {
+    CopyBackupRequest request =
+        CopyBackupRequest.newBuilder()
+            .setParent(parent == null ? null : parent.toString())
+            .setBackupId(backupId)
+            .setSourceBackup(sourceBackup)
+            .setExpireTime(expireTime)
+            .build();
+    return copyBackupAsync(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Starts copying a Cloud Spanner Backup. The returned backup [long-running
+   * operation][google.longrunning.Operation] will have a name of the format
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+   * and can be used to track copying of the backup. The operation is associated with the
+   * destination backup. The [metadata][google.longrunning.Operation.metadata] field type is
+   * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata]. The
+   * [response][google.longrunning.Operation.response] field type is
+   * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned
+   * operation will stop the copying and delete the backup. Concurrent CopyBackup requests can run
+   * on the same source backup.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
+   *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
+   *   String backupId = "backupId2121930365";
+   *   BackupName sourceBackup = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
+   *   Timestamp expireTime = Timestamp.newBuilder().build();
+   *   Backup response =
+   *       databaseAdminClient.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+   * }
+   * }</pre>
+   *
+   * @param parent Required. The name of the destination instance that will contain the backup copy.
+   *     Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+   * @param backupId Required. The id of the backup copy. The `backup_id` appended to `parent` forms
+   *     the full backup_uri of the form
+   *     `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * @param sourceBackup Required. The source backup to be copied. The source backup needs to be in
+   *     READY state for it to be copied. Once CopyBackup is in progress, the source backup cannot
+   *     be deleted or cleaned up on expiration until CopyBackup is finished. Values are of the
+   *     form: `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * @param expireTime Required. The expiration time of the backup in microsecond granularity. The
+   *     expiration time must be at least 6 hours and at most 366 days from the `create_time` of the
+   *     source backup. Once the `expire_time` has passed, the backup is eligible to be
+   *     automatically deleted by Cloud Spanner to free the resources used by the backup.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
+      String parent, String backupId, BackupName sourceBackup, Timestamp expireTime) {
+    CopyBackupRequest request =
+        CopyBackupRequest.newBuilder()
+            .setParent(parent)
+            .setBackupId(backupId)
+            .setSourceBackup(sourceBackup == null ? null : sourceBackup.toString())
+            .setExpireTime(expireTime)
+            .build();
+    return copyBackupAsync(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Starts copying a Cloud Spanner Backup. The returned backup [long-running
+   * operation][google.longrunning.Operation] will have a name of the format
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+   * and can be used to track copying of the backup. The operation is associated with the
+   * destination backup. The [metadata][google.longrunning.Operation.metadata] field type is
+   * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata]. The
+   * [response][google.longrunning.Operation.response] field type is
+   * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned
+   * operation will stop the copying and delete the backup. Concurrent CopyBackup requests can run
+   * on the same source backup.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
+   *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
+   *   String backupId = "backupId2121930365";
+   *   String sourceBackup = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString();
+   *   Timestamp expireTime = Timestamp.newBuilder().build();
+   *   Backup response =
+   *       databaseAdminClient.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+   * }
+   * }</pre>
+   *
+   * @param parent Required. The name of the destination instance that will contain the backup copy.
+   *     Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+   * @param backupId Required. The id of the backup copy. The `backup_id` appended to `parent` forms
+   *     the full backup_uri of the form
+   *     `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * @param sourceBackup Required. The source backup to be copied. The source backup needs to be in
+   *     READY state for it to be copied. Once CopyBackup is in progress, the source backup cannot
+   *     be deleted or cleaned up on expiration until CopyBackup is finished. Values are of the
+   *     form: `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * @param expireTime Required. The expiration time of the backup in microsecond granularity. The
+   *     expiration time must be at least 6 hours and at most 366 days from the `create_time` of the
+   *     source backup. Once the `expire_time` has passed, the backup is eligible to be
+   *     automatically deleted by Cloud Spanner to free the resources used by the backup.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
+      String parent, String backupId, String sourceBackup, Timestamp expireTime) {
+    CopyBackupRequest request =
+        CopyBackupRequest.newBuilder()
+            .setParent(parent)
+            .setBackupId(backupId)
+            .setSourceBackup(sourceBackup)
+            .setExpireTime(expireTime)
+            .build();
+    return copyBackupAsync(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Starts copying a Cloud Spanner Backup. The returned backup [long-running
+   * operation][google.longrunning.Operation] will have a name of the format
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+   * and can be used to track copying of the backup. The operation is associated with the
+   * destination backup. The [metadata][google.longrunning.Operation.metadata] field type is
+   * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata]. The
+   * [response][google.longrunning.Operation.response] field type is
+   * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned
+   * operation will stop the copying and delete the backup. Concurrent CopyBackup requests can run
+   * on the same source backup.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
+   *   CopyBackupRequest request =
+   *       CopyBackupRequest.newBuilder()
+   *           .setParent(InstanceName.of("[PROJECT]", "[INSTANCE]").toString())
+   *           .setBackupId("backupId2121930365")
+   *           .setSourceBackup(BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString())
+   *           .setExpireTime(Timestamp.newBuilder().build())
+   *           .setEncryptionConfig(CopyBackupEncryptionConfig.newBuilder().build())
+   *           .build();
+   *   Backup response = databaseAdminClient.copyBackupAsync(request).get();
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
+      CopyBackupRequest request) {
+    return copyBackupOperationCallable().futureCall(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Starts copying a Cloud Spanner Backup. The returned backup [long-running
+   * operation][google.longrunning.Operation] will have a name of the format
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+   * and can be used to track copying of the backup. The operation is associated with the
+   * destination backup. The [metadata][google.longrunning.Operation.metadata] field type is
+   * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata]. The
+   * [response][google.longrunning.Operation.response] field type is
+   * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned
+   * operation will stop the copying and delete the backup. Concurrent CopyBackup requests can run
+   * on the same source backup.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
+   *   CopyBackupRequest request =
+   *       CopyBackupRequest.newBuilder()
+   *           .setParent(InstanceName.of("[PROJECT]", "[INSTANCE]").toString())
+   *           .setBackupId("backupId2121930365")
+   *           .setSourceBackup(BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString())
+   *           .setExpireTime(Timestamp.newBuilder().build())
+   *           .setEncryptionConfig(CopyBackupEncryptionConfig.newBuilder().build())
+   *           .build();
+   *   OperationFuture<Backup, CopyBackupMetadata> future =
+   *       databaseAdminClient.copyBackupOperationCallable().futureCall(request);
+   *   // Do something.
+   *   Backup response = future.get();
+   * }
+   * }</pre>
+   */
+  public final OperationCallable<CopyBackupRequest, Backup, CopyBackupMetadata>
+      copyBackupOperationCallable() {
+    return stub.copyBackupOperationCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Starts copying a Cloud Spanner Backup. The returned backup [long-running
+   * operation][google.longrunning.Operation] will have a name of the format
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+   * and can be used to track copying of the backup. The operation is associated with the
+   * destination backup. The [metadata][google.longrunning.Operation.metadata] field type is
+   * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata]. The
+   * [response][google.longrunning.Operation.response] field type is
+   * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned
+   * operation will stop the copying and delete the backup. Concurrent CopyBackup requests can run
+   * on the same source backup.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
+   *   CopyBackupRequest request =
+   *       CopyBackupRequest.newBuilder()
+   *           .setParent(InstanceName.of("[PROJECT]", "[INSTANCE]").toString())
+   *           .setBackupId("backupId2121930365")
+   *           .setSourceBackup(BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString())
+   *           .setExpireTime(Timestamp.newBuilder().build())
+   *           .setEncryptionConfig(CopyBackupEncryptionConfig.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Operation> future = databaseAdminClient.copyBackupCallable().futureCall(request);
+   *   // Do something.
+   *   Operation response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<CopyBackupRequest, Operation> copyBackupCallable() {
+    return stub.copyBackupCallable();
+  }
+
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Gets metadata on a pending or completed [Backup][google.spanner.admin.database.v1.Backup].
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminSettings.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminSettings.java
index 358be3bde42..5d924f60ed6 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminSettings.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminSettings.java
@@ -42,6 +42,8 @@
 import com.google.longrunning.Operation;
 import com.google.protobuf.Empty;
 import com.google.spanner.admin.database.v1.Backup;
+import com.google.spanner.admin.database.v1.CopyBackupMetadata;
+import com.google.spanner.admin.database.v1.CopyBackupRequest;
 import com.google.spanner.admin.database.v1.CreateBackupMetadata;
 import com.google.spanner.admin.database.v1.CreateBackupRequest;
 import com.google.spanner.admin.database.v1.CreateDatabaseMetadata;
@@ -174,6 +176,17 @@ public UnaryCallSettings<CreateBackupRequest, Operation> createBackupSettings()
     return ((DatabaseAdminStubSettings) getStubSettings()).createBackupOperationSettings();
   }
 
+  /** Returns the object with the settings used for calls to copyBackup. */
+  public UnaryCallSettings<CopyBackupRequest, Operation> copyBackupSettings() {
+    return ((DatabaseAdminStubSettings) getStubSettings()).copyBackupSettings();
+  }
+
+  /** Returns the object with the settings used for calls to copyBackup. */
+  public OperationCallSettings<CopyBackupRequest, Backup, CopyBackupMetadata>
+      copyBackupOperationSettings() {
+    return ((DatabaseAdminStubSettings) getStubSettings()).copyBackupOperationSettings();
+  }
+
   /** Returns the object with the settings used for calls to getBackup. */
   public UnaryCallSettings<GetBackupRequest, Backup> getBackupSettings() {
     return ((DatabaseAdminStubSettings) getStubSettings()).getBackupSettings();
@@ -394,6 +407,17 @@ public UnaryCallSettings.Builder<CreateBackupRequest, Operation> createBackupSet
       return getStubSettingsBuilder().createBackupOperationSettings();
     }
 
+    /** Returns the builder for the settings used for calls to copyBackup. */
+    public UnaryCallSettings.Builder<CopyBackupRequest, Operation> copyBackupSettings() {
+      return getStubSettingsBuilder().copyBackupSettings();
+    }
+
+    /** Returns the builder for the settings used for calls to copyBackup. */
+    public OperationCallSettings.Builder<CopyBackupRequest, Backup, CopyBackupMetadata>
+        copyBackupOperationSettings() {
+      return getStubSettingsBuilder().copyBackupOperationSettings();
+    }
+
     /** Returns the builder for the settings used for calls to getBackup. */
     public UnaryCallSettings.Builder<GetBackupRequest, Backup> getBackupSettings() {
       return getStubSettingsBuilder().getBackupSettings();
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/gapic_metadata.json b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/gapic_metadata.json
index bb689f4c8d4..db77a349075 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/gapic_metadata.json
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/gapic_metadata.json
@@ -10,6 +10,9 @@
         "grpc": {
           "libraryClient": "DatabaseAdminClient",
           "rpcs": {
+            "CopyBackup": {
+              "methods": ["copyBackupAsync", "copyBackupAsync", "copyBackupAsync", "copyBackupAsync", "copyBackupAsync", "copyBackupOperationCallable", "copyBackupCallable"]
+            },
             "CreateBackup": {
               "methods": ["createBackupAsync", "createBackupAsync", "createBackupAsync", "createBackupOperationCallable", "createBackupCallable"]
             },
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStub.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStub.java
index cf873601ef7..5572033a6ae 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStub.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStub.java
@@ -33,6 +33,8 @@
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
 import com.google.spanner.admin.database.v1.Backup;
+import com.google.spanner.admin.database.v1.CopyBackupMetadata;
+import com.google.spanner.admin.database.v1.CopyBackupRequest;
 import com.google.spanner.admin.database.v1.CreateBackupMetadata;
 import com.google.spanner.admin.database.v1.CreateBackupRequest;
 import com.google.spanner.admin.database.v1.CreateDatabaseMetadata;
@@ -134,6 +136,15 @@ public UnaryCallable<CreateBackupRequest, Operation> createBackupCallable() {
     throw new UnsupportedOperationException("Not implemented: createBackupCallable()");
   }
 
+  public OperationCallable<CopyBackupRequest, Backup, CopyBackupMetadata>
+      copyBackupOperationCallable() {
+    throw new UnsupportedOperationException("Not implemented: copyBackupOperationCallable()");
+  }
+
+  public UnaryCallable<CopyBackupRequest, Operation> copyBackupCallable() {
+    throw new UnsupportedOperationException("Not implemented: copyBackupCallable()");
+  }
+
   public UnaryCallable<GetBackupRequest, Backup> getBackupCallable() {
     throw new UnsupportedOperationException("Not implemented: getBackupCallable()");
   }
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStubSettings.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStubSettings.java
index aea9b512a1c..992e5a79d2b 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStubSettings.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/DatabaseAdminStubSettings.java
@@ -59,6 +59,8 @@
 import com.google.longrunning.Operation;
 import com.google.protobuf.Empty;
 import com.google.spanner.admin.database.v1.Backup;
+import com.google.spanner.admin.database.v1.CopyBackupMetadata;
+import com.google.spanner.admin.database.v1.CopyBackupRequest;
 import com.google.spanner.admin.database.v1.CreateBackupMetadata;
 import com.google.spanner.admin.database.v1.CreateBackupRequest;
 import com.google.spanner.admin.database.v1.CreateDatabaseMetadata;
@@ -149,6 +151,9 @@ public class DatabaseAdminStubSettings extends StubSettings<DatabaseAdminStubSet
   private final UnaryCallSettings<CreateBackupRequest, Operation> createBackupSettings;
   private final OperationCallSettings<CreateBackupRequest, Backup, CreateBackupMetadata>
       createBackupOperationSettings;
+  private final UnaryCallSettings<CopyBackupRequest, Operation> copyBackupSettings;
+  private final OperationCallSettings<CopyBackupRequest, Backup, CopyBackupMetadata>
+      copyBackupOperationSettings;
   private final UnaryCallSettings<GetBackupRequest, Backup> getBackupSettings;
   private final UnaryCallSettings<UpdateBackupRequest, Backup> updateBackupSettings;
   private final UnaryCallSettings<DeleteBackupRequest, Empty> deleteBackupSettings;
@@ -473,6 +478,17 @@ public UnaryCallSettings<CreateBackupRequest, Operation> createBackupSettings()
     return createBackupOperationSettings;
   }
 
+  /** Returns the object with the settings used for calls to copyBackup. */
+  public UnaryCallSettings<CopyBackupRequest, Operation> copyBackupSettings() {
+    return copyBackupSettings;
+  }
+
+  /** Returns the object with the settings used for calls to copyBackup. */
+  public OperationCallSettings<CopyBackupRequest, Backup, CopyBackupMetadata>
+      copyBackupOperationSettings() {
+    return copyBackupOperationSettings;
+  }
+
   /** Returns the object with the settings used for calls to getBackup. */
   public UnaryCallSettings<GetBackupRequest, Backup> getBackupSettings() {
     return getBackupSettings;
@@ -613,6 +629,8 @@ protected DatabaseAdminStubSettings(Builder settingsBuilder) throws IOException
     testIamPermissionsSettings = settingsBuilder.testIamPermissionsSettings().build();
     createBackupSettings = settingsBuilder.createBackupSettings().build();
     createBackupOperationSettings = settingsBuilder.createBackupOperationSettings().build();
+    copyBackupSettings = settingsBuilder.copyBackupSettings().build();
+    copyBackupOperationSettings = settingsBuilder.copyBackupOperationSettings().build();
     getBackupSettings = settingsBuilder.getBackupSettings().build();
     updateBackupSettings = settingsBuilder.updateBackupSettings().build();
     deleteBackupSettings = settingsBuilder.deleteBackupSettings().build();
@@ -650,6 +668,9 @@ public static class Builder extends StubSettings.Builder<DatabaseAdminStubSettin
     private final UnaryCallSettings.Builder<CreateBackupRequest, Operation> createBackupSettings;
     private final OperationCallSettings.Builder<CreateBackupRequest, Backup, CreateBackupMetadata>
         createBackupOperationSettings;
+    private final UnaryCallSettings.Builder<CopyBackupRequest, Operation> copyBackupSettings;
+    private final OperationCallSettings.Builder<CopyBackupRequest, Backup, CopyBackupMetadata>
+        copyBackupOperationSettings;
     private final UnaryCallSettings.Builder<GetBackupRequest, Backup> getBackupSettings;
     private final UnaryCallSettings.Builder<UpdateBackupRequest, Backup> updateBackupSettings;
     private final UnaryCallSettings.Builder<DeleteBackupRequest, Empty> deleteBackupSettings;
@@ -760,6 +781,8 @@ protected Builder(ClientContext clientContext) {
       testIamPermissionsSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       createBackupSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       createBackupOperationSettings = OperationCallSettings.newBuilder();
+      copyBackupSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      copyBackupOperationSettings = OperationCallSettings.newBuilder();
       getBackupSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       updateBackupSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       deleteBackupSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
@@ -783,6 +806,7 @@ protected Builder(ClientContext clientContext) {
               getIamPolicySettings,
               testIamPermissionsSettings,
               createBackupSettings,
+              copyBackupSettings,
               getBackupSettings,
               updateBackupSettings,
               deleteBackupSettings,
@@ -809,6 +833,8 @@ protected Builder(DatabaseAdminStubSettings settings) {
       testIamPermissionsSettings = settings.testIamPermissionsSettings.toBuilder();
       createBackupSettings = settings.createBackupSettings.toBuilder();
       createBackupOperationSettings = settings.createBackupOperationSettings.toBuilder();
+      copyBackupSettings = settings.copyBackupSettings.toBuilder();
+      copyBackupOperationSettings = settings.copyBackupOperationSettings.toBuilder();
       getBackupSettings = settings.getBackupSettings.toBuilder();
       updateBackupSettings = settings.updateBackupSettings.toBuilder();
       deleteBackupSettings = settings.deleteBackupSettings.toBuilder();
@@ -830,6 +856,7 @@ protected Builder(DatabaseAdminStubSettings settings) {
               getIamPolicySettings,
               testIamPermissionsSettings,
               createBackupSettings,
+              copyBackupSettings,
               getBackupSettings,
               updateBackupSettings,
               deleteBackupSettings,
@@ -903,6 +930,11 @@ private static Builder initDefaults(Builder builder) {
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_2_codes"))
           .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_2_params"));
 
+      builder
+          .copyBackupSettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_2_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_2_params"));
+
       builder
           .getBackupSettings()
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("retry_policy_0_codes"))
@@ -1011,6 +1043,29 @@ private static Builder initDefaults(Builder builder) {
                       .setTotalTimeout(Duration.ofMillis(172800000L))
                       .build()));
 
+      builder
+          .copyBackupOperationSettings()
+          .setInitialCallSettings(
+              UnaryCallSettings.<CopyBackupRequest, OperationSnapshot>newUnaryCallSettingsBuilder()
+                  .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_2_codes"))
+                  .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_2_params"))
+                  .build())
+          .setResponseTransformer(
+              ProtoOperationTransformers.ResponseTransformer.create(Backup.class))
+          .setMetadataTransformer(
+              ProtoOperationTransformers.MetadataTransformer.create(CopyBackupMetadata.class))
+          .setPollingAlgorithm(
+              OperationTimedPollAlgorithm.create(
+                  RetrySettings.newBuilder()
+                      .setInitialRetryDelay(Duration.ofMillis(5000L))
+                      .setRetryDelayMultiplier(1.5)
+                      .setMaxRetryDelay(Duration.ofMillis(45000L))
+                      .setInitialRpcTimeout(Duration.ZERO)
+                      .setRpcTimeoutMultiplier(1.0)
+                      .setMaxRpcTimeout(Duration.ZERO)
+                      .setTotalTimeout(Duration.ofMillis(300000L))
+                      .build()));
+
       builder
           .restoreDatabaseOperationSettings()
           .setInitialCallSettings(
@@ -1132,6 +1187,19 @@ public UnaryCallSettings.Builder<CreateBackupRequest, Operation> createBackupSet
       return createBackupOperationSettings;
     }
 
+    /** Returns the builder for the settings used for calls to copyBackup. */
+    public UnaryCallSettings.Builder<CopyBackupRequest, Operation> copyBackupSettings() {
+      return copyBackupSettings;
+    }
+
+    /** Returns the builder for the settings used for calls to copyBackup. */
+    @BetaApi(
+        "The surface for use by generated code is not stable yet and may change in the future.")
+    public OperationCallSettings.Builder<CopyBackupRequest, Backup, CopyBackupMetadata>
+        copyBackupOperationSettings() {
+      return copyBackupOperationSettings;
+    }
+
     /** Returns the builder for the settings used for calls to getBackup. */
     public UnaryCallSettings.Builder<GetBackupRequest, Backup> getBackupSettings() {
       return getBackupSettings;
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminStub.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminStub.java
index 46cdccdbbcc..0df16f344e9 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminStub.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminStub.java
@@ -38,6 +38,8 @@
 import com.google.longrunning.stub.GrpcOperationsStub;
 import com.google.protobuf.Empty;
 import com.google.spanner.admin.database.v1.Backup;
+import com.google.spanner.admin.database.v1.CopyBackupMetadata;
+import com.google.spanner.admin.database.v1.CopyBackupRequest;
 import com.google.spanner.admin.database.v1.CreateBackupMetadata;
 import com.google.spanner.admin.database.v1.CreateBackupRequest;
 import com.google.spanner.admin.database.v1.CreateDatabaseMetadata;
@@ -171,6 +173,14 @@ public class GrpcDatabaseAdminStub extends DatabaseAdminStub {
               .setResponseMarshaller(ProtoUtils.marshaller(Operation.getDefaultInstance()))
               .build();
 
+  private static final MethodDescriptor<CopyBackupRequest, Operation> copyBackupMethodDescriptor =
+      MethodDescriptor.<CopyBackupRequest, Operation>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.spanner.admin.database.v1.DatabaseAdmin/CopyBackup")
+          .setRequestMarshaller(ProtoUtils.marshaller(CopyBackupRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Operation.getDefaultInstance()))
+          .build();
+
   private static final MethodDescriptor<GetBackupRequest, Backup> getBackupMethodDescriptor =
       MethodDescriptor.<GetBackupRequest, Backup>newBuilder()
           .setType(MethodDescriptor.MethodType.UNARY)
@@ -260,6 +270,9 @@ public class GrpcDatabaseAdminStub extends DatabaseAdminStub {
   private final UnaryCallable<CreateBackupRequest, Operation> createBackupCallable;
   private final OperationCallable<CreateBackupRequest, Backup, CreateBackupMetadata>
       createBackupOperationCallable;
+  private final UnaryCallable<CopyBackupRequest, Operation> copyBackupCallable;
+  private final OperationCallable<CopyBackupRequest, Backup, CopyBackupMetadata>
+      copyBackupOperationCallable;
   private final UnaryCallable<GetBackupRequest, Backup> getBackupCallable;
   private final UnaryCallable<UpdateBackupRequest, Backup> updateBackupCallable;
   private final UnaryCallable<DeleteBackupRequest, Empty> deleteBackupCallable;
@@ -422,6 +435,16 @@ protected GrpcDatabaseAdminStub(
                   return params.build();
                 })
             .build();
+    GrpcCallSettings<CopyBackupRequest, Operation> copyBackupTransportSettings =
+        GrpcCallSettings.<CopyBackupRequest, Operation>newBuilder()
+            .setMethodDescriptor(copyBackupMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("parent", String.valueOf(request.getParent()));
+                  return params.build();
+                })
+            .build();
     GrpcCallSettings<GetBackupRequest, Backup> getBackupTransportSettings =
         GrpcCallSettings.<GetBackupRequest, Backup>newBuilder()
             .setMethodDescriptor(getBackupMethodDescriptor)
@@ -551,6 +574,15 @@ protected GrpcDatabaseAdminStub(
             settings.createBackupOperationSettings(),
             clientContext,
             operationsStub);
+    this.copyBackupCallable =
+        callableFactory.createUnaryCallable(
+            copyBackupTransportSettings, settings.copyBackupSettings(), clientContext);
+    this.copyBackupOperationCallable =
+        callableFactory.createOperationCallable(
+            copyBackupTransportSettings,
+            settings.copyBackupOperationSettings(),
+            clientContext,
+            operationsStub);
     this.getBackupCallable =
         callableFactory.createUnaryCallable(
             getBackupTransportSettings, settings.getBackupSettings(), clientContext);
@@ -679,6 +711,17 @@ public UnaryCallable<CreateBackupRequest, Operation> createBackupCallable() {
     return createBackupOperationCallable;
   }
 
+  @Override
+  public UnaryCallable<CopyBackupRequest, Operation> copyBackupCallable() {
+    return copyBackupCallable;
+  }
+
+  @Override
+  public OperationCallable<CopyBackupRequest, Backup, CopyBackupMetadata>
+      copyBackupOperationCallable() {
+    return copyBackupOperationCallable;
+  }
+
   @Override
   public UnaryCallable<GetBackupRequest, Backup> getBackupCallable() {
     return getBackupCallable;
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClientTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClientTest.java
index ef43a4b44c2..4f6d204035f 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClientTest.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/DatabaseAdminClientTest.java
@@ -46,6 +46,7 @@
 import com.google.protobuf.Timestamp;
 import com.google.spanner.admin.database.v1.Backup;
 import com.google.spanner.admin.database.v1.BackupName;
+import com.google.spanner.admin.database.v1.CopyBackupRequest;
 import com.google.spanner.admin.database.v1.CreateBackupRequest;
 import com.google.spanner.admin.database.v1.CreateDatabaseRequest;
 import com.google.spanner.admin.database.v1.Database;
@@ -906,6 +907,8 @@ public void createBackupTest() throws Exception {
             .addAllReferencingDatabases(new ArrayList<String>())
             .setEncryptionInfo(EncryptionInfo.newBuilder().build())
             .setDatabaseDialect(DatabaseDialect.forNumber(0))
+            .addAllReferencingBackups(new ArrayList<String>())
+            .setMaxExpireTime(Timestamp.newBuilder().build())
             .build();
     Operation resultOperation =
         Operation.newBuilder()
@@ -966,6 +969,8 @@ public void createBackupTest2() throws Exception {
             .addAllReferencingDatabases(new ArrayList<String>())
             .setEncryptionInfo(EncryptionInfo.newBuilder().build())
             .setDatabaseDialect(DatabaseDialect.forNumber(0))
+            .addAllReferencingBackups(new ArrayList<String>())
+            .setMaxExpireTime(Timestamp.newBuilder().build())
             .build();
     Operation resultOperation =
         Operation.newBuilder()
@@ -1013,6 +1018,270 @@ public void createBackupExceptionTest2() throws Exception {
     }
   }
 
+  @Test
+  public void copyBackupTest() throws Exception {
+    Backup expectedResponse =
+        Backup.newBuilder()
+            .setDatabase(DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString())
+            .setVersionTime(Timestamp.newBuilder().build())
+            .setExpireTime(Timestamp.newBuilder().build())
+            .setName(BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString())
+            .setCreateTime(Timestamp.newBuilder().build())
+            .setSizeBytes(-1796325715)
+            .addAllReferencingDatabases(new ArrayList<String>())
+            .setEncryptionInfo(EncryptionInfo.newBuilder().build())
+            .setDatabaseDialect(DatabaseDialect.forNumber(0))
+            .addAllReferencingBackups(new ArrayList<String>())
+            .setMaxExpireTime(Timestamp.newBuilder().build())
+            .build();
+    Operation resultOperation =
+        Operation.newBuilder()
+            .setName("copyBackupTest")
+            .setDone(true)
+            .setResponse(Any.pack(expectedResponse))
+            .build();
+    mockDatabaseAdmin.addResponse(resultOperation);
+
+    InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
+    String backupId = "backupId2121930365";
+    BackupName sourceBackup = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
+    Timestamp expireTime = Timestamp.newBuilder().build();
+
+    Backup actualResponse =
+        client.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockDatabaseAdmin.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    CopyBackupRequest actualRequest = ((CopyBackupRequest) actualRequests.get(0));
+
+    Assert.assertEquals(parent.toString(), actualRequest.getParent());
+    Assert.assertEquals(backupId, actualRequest.getBackupId());
+    Assert.assertEquals(sourceBackup.toString(), actualRequest.getSourceBackup());
+    Assert.assertEquals(expireTime, actualRequest.getExpireTime());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void copyBackupExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockDatabaseAdmin.addException(exception);
+
+    try {
+      InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
+      String backupId = "backupId2121930365";
+      BackupName sourceBackup = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
+      Timestamp expireTime = Timestamp.newBuilder().build();
+      client.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+      Assert.fail("No exception raised");
+    } catch (ExecutionException e) {
+      Assert.assertEquals(InvalidArgumentException.class, e.getCause().getClass());
+      InvalidArgumentException apiException = ((InvalidArgumentException) e.getCause());
+      Assert.assertEquals(StatusCode.Code.INVALID_ARGUMENT, apiException.getStatusCode().getCode());
+    }
+  }
+
+  @Test
+  public void copyBackupTest2() throws Exception {
+    Backup expectedResponse =
+        Backup.newBuilder()
+            .setDatabase(DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString())
+            .setVersionTime(Timestamp.newBuilder().build())
+            .setExpireTime(Timestamp.newBuilder().build())
+            .setName(BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString())
+            .setCreateTime(Timestamp.newBuilder().build())
+            .setSizeBytes(-1796325715)
+            .addAllReferencingDatabases(new ArrayList<String>())
+            .setEncryptionInfo(EncryptionInfo.newBuilder().build())
+            .setDatabaseDialect(DatabaseDialect.forNumber(0))
+            .addAllReferencingBackups(new ArrayList<String>())
+            .setMaxExpireTime(Timestamp.newBuilder().build())
+            .build();
+    Operation resultOperation =
+        Operation.newBuilder()
+            .setName("copyBackupTest")
+            .setDone(true)
+            .setResponse(Any.pack(expectedResponse))
+            .build();
+    mockDatabaseAdmin.addResponse(resultOperation);
+
+    InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
+    String backupId = "backupId2121930365";
+    String sourceBackup = "sourceBackup823134653";
+    Timestamp expireTime = Timestamp.newBuilder().build();
+
+    Backup actualResponse =
+        client.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockDatabaseAdmin.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    CopyBackupRequest actualRequest = ((CopyBackupRequest) actualRequests.get(0));
+
+    Assert.assertEquals(parent.toString(), actualRequest.getParent());
+    Assert.assertEquals(backupId, actualRequest.getBackupId());
+    Assert.assertEquals(sourceBackup, actualRequest.getSourceBackup());
+    Assert.assertEquals(expireTime, actualRequest.getExpireTime());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void copyBackupExceptionTest2() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockDatabaseAdmin.addException(exception);
+
+    try {
+      InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
+      String backupId = "backupId2121930365";
+      String sourceBackup = "sourceBackup823134653";
+      Timestamp expireTime = Timestamp.newBuilder().build();
+      client.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+      Assert.fail("No exception raised");
+    } catch (ExecutionException e) {
+      Assert.assertEquals(InvalidArgumentException.class, e.getCause().getClass());
+      InvalidArgumentException apiException = ((InvalidArgumentException) e.getCause());
+      Assert.assertEquals(StatusCode.Code.INVALID_ARGUMENT, apiException.getStatusCode().getCode());
+    }
+  }
+
+  @Test
+  public void copyBackupTest3() throws Exception {
+    Backup expectedResponse =
+        Backup.newBuilder()
+            .setDatabase(DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString())
+            .setVersionTime(Timestamp.newBuilder().build())
+            .setExpireTime(Timestamp.newBuilder().build())
+            .setName(BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString())
+            .setCreateTime(Timestamp.newBuilder().build())
+            .setSizeBytes(-1796325715)
+            .addAllReferencingDatabases(new ArrayList<String>())
+            .setEncryptionInfo(EncryptionInfo.newBuilder().build())
+            .setDatabaseDialect(DatabaseDialect.forNumber(0))
+            .addAllReferencingBackups(new ArrayList<String>())
+            .setMaxExpireTime(Timestamp.newBuilder().build())
+            .build();
+    Operation resultOperation =
+        Operation.newBuilder()
+            .setName("copyBackupTest")
+            .setDone(true)
+            .setResponse(Any.pack(expectedResponse))
+            .build();
+    mockDatabaseAdmin.addResponse(resultOperation);
+
+    String parent = "parent-995424086";
+    String backupId = "backupId2121930365";
+    BackupName sourceBackup = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
+    Timestamp expireTime = Timestamp.newBuilder().build();
+
+    Backup actualResponse =
+        client.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockDatabaseAdmin.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    CopyBackupRequest actualRequest = ((CopyBackupRequest) actualRequests.get(0));
+
+    Assert.assertEquals(parent, actualRequest.getParent());
+    Assert.assertEquals(backupId, actualRequest.getBackupId());
+    Assert.assertEquals(sourceBackup.toString(), actualRequest.getSourceBackup());
+    Assert.assertEquals(expireTime, actualRequest.getExpireTime());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void copyBackupExceptionTest3() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockDatabaseAdmin.addException(exception);
+
+    try {
+      String parent = "parent-995424086";
+      String backupId = "backupId2121930365";
+      BackupName sourceBackup = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
+      Timestamp expireTime = Timestamp.newBuilder().build();
+      client.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+      Assert.fail("No exception raised");
+    } catch (ExecutionException e) {
+      Assert.assertEquals(InvalidArgumentException.class, e.getCause().getClass());
+      InvalidArgumentException apiException = ((InvalidArgumentException) e.getCause());
+      Assert.assertEquals(StatusCode.Code.INVALID_ARGUMENT, apiException.getStatusCode().getCode());
+    }
+  }
+
+  @Test
+  public void copyBackupTest4() throws Exception {
+    Backup expectedResponse =
+        Backup.newBuilder()
+            .setDatabase(DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString())
+            .setVersionTime(Timestamp.newBuilder().build())
+            .setExpireTime(Timestamp.newBuilder().build())
+            .setName(BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString())
+            .setCreateTime(Timestamp.newBuilder().build())
+            .setSizeBytes(-1796325715)
+            .addAllReferencingDatabases(new ArrayList<String>())
+            .setEncryptionInfo(EncryptionInfo.newBuilder().build())
+            .setDatabaseDialect(DatabaseDialect.forNumber(0))
+            .addAllReferencingBackups(new ArrayList<String>())
+            .setMaxExpireTime(Timestamp.newBuilder().build())
+            .build();
+    Operation resultOperation =
+        Operation.newBuilder()
+            .setName("copyBackupTest")
+            .setDone(true)
+            .setResponse(Any.pack(expectedResponse))
+            .build();
+    mockDatabaseAdmin.addResponse(resultOperation);
+
+    String parent = "parent-995424086";
+    String backupId = "backupId2121930365";
+    String sourceBackup = "sourceBackup823134653";
+    Timestamp expireTime = Timestamp.newBuilder().build();
+
+    Backup actualResponse =
+        client.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockDatabaseAdmin.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    CopyBackupRequest actualRequest = ((CopyBackupRequest) actualRequests.get(0));
+
+    Assert.assertEquals(parent, actualRequest.getParent());
+    Assert.assertEquals(backupId, actualRequest.getBackupId());
+    Assert.assertEquals(sourceBackup, actualRequest.getSourceBackup());
+    Assert.assertEquals(expireTime, actualRequest.getExpireTime());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void copyBackupExceptionTest4() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockDatabaseAdmin.addException(exception);
+
+    try {
+      String parent = "parent-995424086";
+      String backupId = "backupId2121930365";
+      String sourceBackup = "sourceBackup823134653";
+      Timestamp expireTime = Timestamp.newBuilder().build();
+      client.copyBackupAsync(parent, backupId, sourceBackup, expireTime).get();
+      Assert.fail("No exception raised");
+    } catch (ExecutionException e) {
+      Assert.assertEquals(InvalidArgumentException.class, e.getCause().getClass());
+      InvalidArgumentException apiException = ((InvalidArgumentException) e.getCause());
+      Assert.assertEquals(StatusCode.Code.INVALID_ARGUMENT, apiException.getStatusCode().getCode());
+    }
+  }
+
   @Test
   public void getBackupTest() throws Exception {
     Backup expectedResponse =
@@ -1026,6 +1295,8 @@ public void getBackupTest() throws Exception {
             .addAllReferencingDatabases(new ArrayList<String>())
             .setEncryptionInfo(EncryptionInfo.newBuilder().build())
             .setDatabaseDialect(DatabaseDialect.forNumber(0))
+            .addAllReferencingBackups(new ArrayList<String>())
+            .setMaxExpireTime(Timestamp.newBuilder().build())
             .build();
     mockDatabaseAdmin.addResponse(expectedResponse);
 
@@ -1072,6 +1343,8 @@ public void getBackupTest2() throws Exception {
             .addAllReferencingDatabases(new ArrayList<String>())
             .setEncryptionInfo(EncryptionInfo.newBuilder().build())
             .setDatabaseDialect(DatabaseDialect.forNumber(0))
+            .addAllReferencingBackups(new ArrayList<String>())
+            .setMaxExpireTime(Timestamp.newBuilder().build())
             .build();
     mockDatabaseAdmin.addResponse(expectedResponse);
 
@@ -1118,6 +1391,8 @@ public void updateBackupTest() throws Exception {
             .addAllReferencingDatabases(new ArrayList<String>())
             .setEncryptionInfo(EncryptionInfo.newBuilder().build())
             .setDatabaseDialect(DatabaseDialect.forNumber(0))
+            .addAllReferencingBackups(new ArrayList<String>())
+            .setMaxExpireTime(Timestamp.newBuilder().build())
             .build();
     mockDatabaseAdmin.addResponse(expectedResponse);
 
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/MockDatabaseAdminImpl.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/MockDatabaseAdminImpl.java
index a0b87516293..ce169fef29f 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/MockDatabaseAdminImpl.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/MockDatabaseAdminImpl.java
@@ -26,6 +26,7 @@
 import com.google.protobuf.AbstractMessage;
 import com.google.protobuf.Empty;
 import com.google.spanner.admin.database.v1.Backup;
+import com.google.spanner.admin.database.v1.CopyBackupRequest;
 import com.google.spanner.admin.database.v1.CreateBackupRequest;
 import com.google.spanner.admin.database.v1.CreateDatabaseRequest;
 import com.google.spanner.admin.database.v1.Database;
@@ -293,6 +294,26 @@ public void createBackup(
     }
   }
 
+  @Override
+  public void copyBackup(CopyBackupRequest request, StreamObserver<Operation> responseObserver) {
+    Object response = responses.poll();
+    if (response instanceof Operation) {
+      requests.add(request);
+      responseObserver.onNext(((Operation) response));
+      responseObserver.onCompleted();
+    } else if (response instanceof Exception) {
+      responseObserver.onError(((Exception) response));
+    } else {
+      responseObserver.onError(
+          new IllegalArgumentException(
+              String.format(
+                  "Unrecognized response type %s for method CopyBackup, expected %s or %s",
+                  response == null ? "null" : response.getClass().getName(),
+                  Operation.class.getName(),
+                  Exception.class.getName())));
+    }
+  }
+
   @Override
   public void getBackup(GetBackupRequest request, StreamObserver<Backup> responseObserver) {
     Object response = responses.poll();
diff --git a/grpc-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseAdminGrpc.java b/grpc-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseAdminGrpc.java
index 55afe37254c..184bc2de624 100644
--- a/grpc-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseAdminGrpc.java
+++ b/grpc-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseAdminGrpc.java
@@ -481,6 +481,49 @@ private DatabaseAdminGrpc() {}
     return getCreateBackupMethod;
   }
 
+  private static volatile io.grpc.MethodDescriptor<
+          com.google.spanner.admin.database.v1.CopyBackupRequest, com.google.longrunning.Operation>
+      getCopyBackupMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "CopyBackup",
+      requestType = com.google.spanner.admin.database.v1.CopyBackupRequest.class,
+      responseType = com.google.longrunning.Operation.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<
+          com.google.spanner.admin.database.v1.CopyBackupRequest, com.google.longrunning.Operation>
+      getCopyBackupMethod() {
+    io.grpc.MethodDescriptor<
+            com.google.spanner.admin.database.v1.CopyBackupRequest,
+            com.google.longrunning.Operation>
+        getCopyBackupMethod;
+    if ((getCopyBackupMethod = DatabaseAdminGrpc.getCopyBackupMethod) == null) {
+      synchronized (DatabaseAdminGrpc.class) {
+        if ((getCopyBackupMethod = DatabaseAdminGrpc.getCopyBackupMethod) == null) {
+          DatabaseAdminGrpc.getCopyBackupMethod =
+              getCopyBackupMethod =
+                  io.grpc.MethodDescriptor
+                      .<com.google.spanner.admin.database.v1.CopyBackupRequest,
+                          com.google.longrunning.Operation>
+                          newBuilder()
+                      .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+                      .setFullMethodName(generateFullMethodName(SERVICE_NAME, "CopyBackup"))
+                      .setSampledToLocalTracing(true)
+                      .setRequestMarshaller(
+                          io.grpc.protobuf.ProtoUtils.marshaller(
+                              com.google.spanner.admin.database.v1.CopyBackupRequest
+                                  .getDefaultInstance()))
+                      .setResponseMarshaller(
+                          io.grpc.protobuf.ProtoUtils.marshaller(
+                              com.google.longrunning.Operation.getDefaultInstance()))
+                      .setSchemaDescriptor(new DatabaseAdminMethodDescriptorSupplier("CopyBackup"))
+                      .build();
+        }
+      }
+    }
+    return getCopyBackupMethod;
+  }
+
   private static volatile io.grpc.MethodDescriptor<
           com.google.spanner.admin.database.v1.GetBackupRequest,
           com.google.spanner.admin.database.v1.Backup>
@@ -1054,6 +1097,30 @@ public void createBackup(
           getCreateBackupMethod(), responseObserver);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Starts copying a Cloud Spanner Backup.
+     * The returned backup [long-running operation][google.longrunning.Operation]
+     * will have a name of the format
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+     * and can be used to track copying of the backup. The operation is associated
+     * with the destination backup.
+     * The [metadata][google.longrunning.Operation.metadata] field type is
+     * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+     * The [response][google.longrunning.Operation.response] field type is
+     * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned operation will stop the
+     * copying and delete the backup.
+     * Concurrent CopyBackup requests can run on the same source backup.
+     * </pre>
+     */
+    public void copyBackup(
+        com.google.spanner.admin.database.v1.CopyBackupRequest request,
+        io.grpc.stub.StreamObserver<com.google.longrunning.Operation> responseObserver) {
+      io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall(getCopyBackupMethod(), responseObserver);
+    }
+
     /**
      *
      *
@@ -1256,6 +1323,12 @@ public final io.grpc.ServerServiceDefinition bindService() {
                   new MethodHandlers<
                       com.google.spanner.admin.database.v1.CreateBackupRequest,
                       com.google.longrunning.Operation>(this, METHODID_CREATE_BACKUP)))
+          .addMethod(
+              getCopyBackupMethod(),
+              io.grpc.stub.ServerCalls.asyncUnaryCall(
+                  new MethodHandlers<
+                      com.google.spanner.admin.database.v1.CopyBackupRequest,
+                      com.google.longrunning.Operation>(this, METHODID_COPY_BACKUP)))
           .addMethod(
               getGetBackupMethod(),
               io.grpc.stub.ServerCalls.asyncUnaryCall(
@@ -1541,6 +1614,31 @@ public void createBackup(
           responseObserver);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Starts copying a Cloud Spanner Backup.
+     * The returned backup [long-running operation][google.longrunning.Operation]
+     * will have a name of the format
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+     * and can be used to track copying of the backup. The operation is associated
+     * with the destination backup.
+     * The [metadata][google.longrunning.Operation.metadata] field type is
+     * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+     * The [response][google.longrunning.Operation.response] field type is
+     * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned operation will stop the
+     * copying and delete the backup.
+     * Concurrent CopyBackup requests can run on the same source backup.
+     * </pre>
+     */
+    public void copyBackup(
+        com.google.spanner.admin.database.v1.CopyBackupRequest request,
+        io.grpc.stub.StreamObserver<com.google.longrunning.Operation> responseObserver) {
+      io.grpc.stub.ClientCalls.asyncUnaryCall(
+          getChannel().newCall(getCopyBackupMethod(), getCallOptions()), request, responseObserver);
+    }
+
     /**
      *
      *
@@ -1892,6 +1990,30 @@ public com.google.longrunning.Operation createBackup(
           getChannel(), getCreateBackupMethod(), getCallOptions(), request);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Starts copying a Cloud Spanner Backup.
+     * The returned backup [long-running operation][google.longrunning.Operation]
+     * will have a name of the format
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+     * and can be used to track copying of the backup. The operation is associated
+     * with the destination backup.
+     * The [metadata][google.longrunning.Operation.metadata] field type is
+     * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+     * The [response][google.longrunning.Operation.response] field type is
+     * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned operation will stop the
+     * copying and delete the backup.
+     * Concurrent CopyBackup requests can run on the same source backup.
+     * </pre>
+     */
+    public com.google.longrunning.Operation copyBackup(
+        com.google.spanner.admin.database.v1.CopyBackupRequest request) {
+      return io.grpc.stub.ClientCalls.blockingUnaryCall(
+          getChannel(), getCopyBackupMethod(), getCallOptions(), request);
+    }
+
     /**
      *
      *
@@ -2226,6 +2348,30 @@ protected DatabaseAdminFutureStub build(
           getChannel().newCall(getCreateBackupMethod(), getCallOptions()), request);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Starts copying a Cloud Spanner Backup.
+     * The returned backup [long-running operation][google.longrunning.Operation]
+     * will have a name of the format
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;/operations/&lt;operation_id&gt;`
+     * and can be used to track copying of the backup. The operation is associated
+     * with the destination backup.
+     * The [metadata][google.longrunning.Operation.metadata] field type is
+     * [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+     * The [response][google.longrunning.Operation.response] field type is
+     * [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned operation will stop the
+     * copying and delete the backup.
+     * Concurrent CopyBackup requests can run on the same source backup.
+     * </pre>
+     */
+    public com.google.common.util.concurrent.ListenableFuture<com.google.longrunning.Operation>
+        copyBackup(com.google.spanner.admin.database.v1.CopyBackupRequest request) {
+      return io.grpc.stub.ClientCalls.futureUnaryCall(
+          getChannel().newCall(getCopyBackupMethod(), getCallOptions()), request);
+    }
+
     /**
      *
      *
@@ -2369,13 +2515,14 @@ protected DatabaseAdminFutureStub build(
   private static final int METHODID_GET_IAM_POLICY = 7;
   private static final int METHODID_TEST_IAM_PERMISSIONS = 8;
   private static final int METHODID_CREATE_BACKUP = 9;
-  private static final int METHODID_GET_BACKUP = 10;
-  private static final int METHODID_UPDATE_BACKUP = 11;
-  private static final int METHODID_DELETE_BACKUP = 12;
-  private static final int METHODID_LIST_BACKUPS = 13;
-  private static final int METHODID_RESTORE_DATABASE = 14;
-  private static final int METHODID_LIST_DATABASE_OPERATIONS = 15;
-  private static final int METHODID_LIST_BACKUP_OPERATIONS = 16;
+  private static final int METHODID_COPY_BACKUP = 10;
+  private static final int METHODID_GET_BACKUP = 11;
+  private static final int METHODID_UPDATE_BACKUP = 12;
+  private static final int METHODID_DELETE_BACKUP = 13;
+  private static final int METHODID_LIST_BACKUPS = 14;
+  private static final int METHODID_RESTORE_DATABASE = 15;
+  private static final int METHODID_LIST_DATABASE_OPERATIONS = 16;
+  private static final int METHODID_LIST_BACKUP_OPERATIONS = 17;
 
   private static final class MethodHandlers<Req, Resp>
       implements io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
@@ -2450,6 +2597,11 @@ public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserv
               (com.google.spanner.admin.database.v1.CreateBackupRequest) request,
               (io.grpc.stub.StreamObserver<com.google.longrunning.Operation>) responseObserver);
           break;
+        case METHODID_COPY_BACKUP:
+          serviceImpl.copyBackup(
+              (com.google.spanner.admin.database.v1.CopyBackupRequest) request,
+              (io.grpc.stub.StreamObserver<com.google.longrunning.Operation>) responseObserver);
+          break;
         case METHODID_GET_BACKUP:
           serviceImpl.getBackup(
               (com.google.spanner.admin.database.v1.GetBackupRequest) request,
@@ -2567,6 +2719,7 @@ public static io.grpc.ServiceDescriptor getServiceDescriptor() {
                       .addMethod(getGetIamPolicyMethod())
                       .addMethod(getTestIamPermissionsMethod())
                       .addMethod(getCreateBackupMethod())
+                      .addMethod(getCopyBackupMethod())
                       .addMethod(getGetBackupMethod())
                       .addMethod(getUpdateBackupMethod())
                       .addMethod(getDeleteBackupMethod())
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/Backup.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/Backup.java
index 3a974718685..ff197cea3fb 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/Backup.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/Backup.java
@@ -43,6 +43,7 @@ private Backup() {
     state_ = 0;
     referencingDatabases_ = com.google.protobuf.LazyStringArrayList.EMPTY;
     databaseDialect_ = 0;
+    referencingBackups_ = com.google.protobuf.LazyStringArrayList.EMPTY;
   }
 
   @java.lang.Override
@@ -178,6 +179,31 @@ private Backup(
               int rawValue = input.readEnum();
 
               databaseDialect_ = rawValue;
+              break;
+            }
+          case 90:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+              if (!((mutable_bitField0_ & 0x00000002) != 0)) {
+                referencingBackups_ = new com.google.protobuf.LazyStringArrayList();
+                mutable_bitField0_ |= 0x00000002;
+              }
+              referencingBackups_.add(s);
+              break;
+            }
+          case 98:
+            {
+              com.google.protobuf.Timestamp.Builder subBuilder = null;
+              if (maxExpireTime_ != null) {
+                subBuilder = maxExpireTime_.toBuilder();
+              }
+              maxExpireTime_ =
+                  input.readMessage(com.google.protobuf.Timestamp.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(maxExpireTime_);
+                maxExpireTime_ = subBuilder.buildPartial();
+              }
+
               break;
             }
           default:
@@ -197,6 +223,9 @@ private Backup(
       if (((mutable_bitField0_ & 0x00000001) != 0)) {
         referencingDatabases_ = referencingDatabases_.getUnmodifiableView();
       }
+      if (((mutable_bitField0_ & 0x00000002) != 0)) {
+        referencingBackups_ = referencingBackups_.getUnmodifiableView();
+      }
       this.unknownFields = unknownFields.build();
       makeExtensionsImmutable();
     }
@@ -920,6 +949,165 @@ public com.google.spanner.admin.database.v1.DatabaseDialect getDatabaseDialect()
         : result;
   }
 
+  public static final int REFERENCING_BACKUPS_FIELD_NUMBER = 11;
+  private com.google.protobuf.LazyStringList referencingBackups_;
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The names of the destination backups being created by copying
+   * this source backup. The backup names are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * Referencing backups may exist in different instances. The existence of
+   * any referencing backup prevents the backup from being deleted. When the
+   * copy operation is done (either successfully completed or cancelled or the
+   * destination backup is deleted), the reference to the backup is removed.
+   * </pre>
+   *
+   * <code>
+   * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return A list containing the referencingBackups.
+   */
+  public com.google.protobuf.ProtocolStringList getReferencingBackupsList() {
+    return referencingBackups_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The names of the destination backups being created by copying
+   * this source backup. The backup names are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * Referencing backups may exist in different instances. The existence of
+   * any referencing backup prevents the backup from being deleted. When the
+   * copy operation is done (either successfully completed or cancelled or the
+   * destination backup is deleted), the reference to the backup is removed.
+   * </pre>
+   *
+   * <code>
+   * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The count of referencingBackups.
+   */
+  public int getReferencingBackupsCount() {
+    return referencingBackups_.size();
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The names of the destination backups being created by copying
+   * this source backup. The backup names are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * Referencing backups may exist in different instances. The existence of
+   * any referencing backup prevents the backup from being deleted. When the
+   * copy operation is done (either successfully completed or cancelled or the
+   * destination backup is deleted), the reference to the backup is removed.
+   * </pre>
+   *
+   * <code>
+   * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @param index The index of the element to return.
+   * @return The referencingBackups at the given index.
+   */
+  public java.lang.String getReferencingBackups(int index) {
+    return referencingBackups_.get(index);
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The names of the destination backups being created by copying
+   * this source backup. The backup names are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * Referencing backups may exist in different instances. The existence of
+   * any referencing backup prevents the backup from being deleted. When the
+   * copy operation is done (either successfully completed or cancelled or the
+   * destination backup is deleted), the reference to the backup is removed.
+   * </pre>
+   *
+   * <code>
+   * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @param index The index of the value to return.
+   * @return The bytes of the referencingBackups at the given index.
+   */
+  public com.google.protobuf.ByteString getReferencingBackupsBytes(int index) {
+    return referencingBackups_.getByteString(index);
+  }
+
+  public static final int MAX_EXPIRE_TIME_FIELD_NUMBER = 12;
+  private com.google.protobuf.Timestamp maxExpireTime_;
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The max allowed expiration time of the backup, with
+   * microseconds granularity. A backup's expiration time can be configured in
+   * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+   * copying an existing backup, the expiration time specified must be
+   * less than `Backup.max_expire_time`.
+   * </pre>
+   *
+   * <code>
+   * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   *
+   * @return Whether the maxExpireTime field is set.
+   */
+  @java.lang.Override
+  public boolean hasMaxExpireTime() {
+    return maxExpireTime_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The max allowed expiration time of the backup, with
+   * microseconds granularity. A backup's expiration time can be configured in
+   * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+   * copying an existing backup, the expiration time specified must be
+   * less than `Backup.max_expire_time`.
+   * </pre>
+   *
+   * <code>
+   * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   *
+   * @return The maxExpireTime.
+   */
+  @java.lang.Override
+  public com.google.protobuf.Timestamp getMaxExpireTime() {
+    return maxExpireTime_ == null
+        ? com.google.protobuf.Timestamp.getDefaultInstance()
+        : maxExpireTime_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The max allowed expiration time of the backup, with
+   * microseconds granularity. A backup's expiration time can be configured in
+   * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+   * copying an existing backup, the expiration time specified must be
+   * less than `Backup.max_expire_time`.
+   * </pre>
+   *
+   * <code>
+   * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.protobuf.TimestampOrBuilder getMaxExpireTimeOrBuilder() {
+    return getMaxExpireTime();
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -967,6 +1155,12 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
             .getNumber()) {
       output.writeEnum(10, databaseDialect_);
     }
+    for (int i = 0; i < referencingBackups_.size(); i++) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 11, referencingBackups_.getRaw(i));
+    }
+    if (maxExpireTime_ != null) {
+      output.writeMessage(12, getMaxExpireTime());
+    }
     unknownFields.writeTo(output);
   }
 
@@ -1013,6 +1207,17 @@ public int getSerializedSize() {
             .getNumber()) {
       size += com.google.protobuf.CodedOutputStream.computeEnumSize(10, databaseDialect_);
     }
+    {
+      int dataSize = 0;
+      for (int i = 0; i < referencingBackups_.size(); i++) {
+        dataSize += computeStringSizeNoTag(referencingBackups_.getRaw(i));
+      }
+      size += dataSize;
+      size += 1 * getReferencingBackupsList().size();
+    }
+    if (maxExpireTime_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(12, getMaxExpireTime());
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -1051,6 +1256,11 @@ public boolean equals(final java.lang.Object obj) {
       if (!getEncryptionInfo().equals(other.getEncryptionInfo())) return false;
     }
     if (databaseDialect_ != other.databaseDialect_) return false;
+    if (!getReferencingBackupsList().equals(other.getReferencingBackupsList())) return false;
+    if (hasMaxExpireTime() != other.hasMaxExpireTime()) return false;
+    if (hasMaxExpireTime()) {
+      if (!getMaxExpireTime().equals(other.getMaxExpireTime())) return false;
+    }
     if (!unknownFields.equals(other.unknownFields)) return false;
     return true;
   }
@@ -1092,6 +1302,14 @@ public int hashCode() {
     }
     hash = (37 * hash) + DATABASE_DIALECT_FIELD_NUMBER;
     hash = (53 * hash) + databaseDialect_;
+    if (getReferencingBackupsCount() > 0) {
+      hash = (37 * hash) + REFERENCING_BACKUPS_FIELD_NUMBER;
+      hash = (53 * hash) + getReferencingBackupsList().hashCode();
+    }
+    if (hasMaxExpireTime()) {
+      hash = (37 * hash) + MAX_EXPIRE_TIME_FIELD_NUMBER;
+      hash = (53 * hash) + getMaxExpireTime().hashCode();
+    }
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -1273,6 +1491,14 @@ public Builder clear() {
       }
       databaseDialect_ = 0;
 
+      referencingBackups_ = com.google.protobuf.LazyStringArrayList.EMPTY;
+      bitField0_ = (bitField0_ & ~0x00000002);
+      if (maxExpireTimeBuilder_ == null) {
+        maxExpireTime_ = null;
+      } else {
+        maxExpireTime_ = null;
+        maxExpireTimeBuilder_ = null;
+      }
       return this;
     }
 
@@ -1331,6 +1557,16 @@ public com.google.spanner.admin.database.v1.Backup buildPartial() {
         result.encryptionInfo_ = encryptionInfoBuilder_.build();
       }
       result.databaseDialect_ = databaseDialect_;
+      if (((bitField0_ & 0x00000002) != 0)) {
+        referencingBackups_ = referencingBackups_.getUnmodifiableView();
+        bitField0_ = (bitField0_ & ~0x00000002);
+      }
+      result.referencingBackups_ = referencingBackups_;
+      if (maxExpireTimeBuilder_ == null) {
+        result.maxExpireTime_ = maxExpireTime_;
+      } else {
+        result.maxExpireTime_ = maxExpireTimeBuilder_.build();
+      }
       onBuilt();
       return result;
     }
@@ -1419,6 +1655,19 @@ public Builder mergeFrom(com.google.spanner.admin.database.v1.Backup other) {
       if (other.databaseDialect_ != 0) {
         setDatabaseDialectValue(other.getDatabaseDialectValue());
       }
+      if (!other.referencingBackups_.isEmpty()) {
+        if (referencingBackups_.isEmpty()) {
+          referencingBackups_ = other.referencingBackups_;
+          bitField0_ = (bitField0_ & ~0x00000002);
+        } else {
+          ensureReferencingBackupsIsMutable();
+          referencingBackups_.addAll(other.referencingBackups_);
+        }
+        onChanged();
+      }
+      if (other.hasMaxExpireTime()) {
+        mergeMaxExpireTime(other.getMaxExpireTime());
+      }
       this.mergeUnknownFields(other.unknownFields);
       onChanged();
       return this;
@@ -3094,6 +3343,485 @@ public Builder clearDatabaseDialect() {
       return this;
     }
 
+    private com.google.protobuf.LazyStringList referencingBackups_ =
+        com.google.protobuf.LazyStringArrayList.EMPTY;
+
+    private void ensureReferencingBackupsIsMutable() {
+      if (!((bitField0_ & 0x00000002) != 0)) {
+        referencingBackups_ = new com.google.protobuf.LazyStringArrayList(referencingBackups_);
+        bitField0_ |= 0x00000002;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The names of the destination backups being created by copying
+     * this source backup. The backup names are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * Referencing backups may exist in different instances. The existence of
+     * any referencing backup prevents the backup from being deleted. When the
+     * copy operation is done (either successfully completed or cancelled or the
+     * destination backup is deleted), the reference to the backup is removed.
+     * </pre>
+     *
+     * <code>
+     * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return A list containing the referencingBackups.
+     */
+    public com.google.protobuf.ProtocolStringList getReferencingBackupsList() {
+      return referencingBackups_.getUnmodifiableView();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The names of the destination backups being created by copying
+     * this source backup. The backup names are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * Referencing backups may exist in different instances. The existence of
+     * any referencing backup prevents the backup from being deleted. When the
+     * copy operation is done (either successfully completed or cancelled or the
+     * destination backup is deleted), the reference to the backup is removed.
+     * </pre>
+     *
+     * <code>
+     * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The count of referencingBackups.
+     */
+    public int getReferencingBackupsCount() {
+      return referencingBackups_.size();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The names of the destination backups being created by copying
+     * this source backup. The backup names are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * Referencing backups may exist in different instances. The existence of
+     * any referencing backup prevents the backup from being deleted. When the
+     * copy operation is done (either successfully completed or cancelled or the
+     * destination backup is deleted), the reference to the backup is removed.
+     * </pre>
+     *
+     * <code>
+     * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param index The index of the element to return.
+     * @return The referencingBackups at the given index.
+     */
+    public java.lang.String getReferencingBackups(int index) {
+      return referencingBackups_.get(index);
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The names of the destination backups being created by copying
+     * this source backup. The backup names are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * Referencing backups may exist in different instances. The existence of
+     * any referencing backup prevents the backup from being deleted. When the
+     * copy operation is done (either successfully completed or cancelled or the
+     * destination backup is deleted), the reference to the backup is removed.
+     * </pre>
+     *
+     * <code>
+     * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param index The index of the value to return.
+     * @return The bytes of the referencingBackups at the given index.
+     */
+    public com.google.protobuf.ByteString getReferencingBackupsBytes(int index) {
+      return referencingBackups_.getByteString(index);
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The names of the destination backups being created by copying
+     * this source backup. The backup names are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * Referencing backups may exist in different instances. The existence of
+     * any referencing backup prevents the backup from being deleted. When the
+     * copy operation is done (either successfully completed or cancelled or the
+     * destination backup is deleted), the reference to the backup is removed.
+     * </pre>
+     *
+     * <code>
+     * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param index The index to set the value at.
+     * @param value The referencingBackups to set.
+     * @return This builder for chaining.
+     */
+    public Builder setReferencingBackups(int index, java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      ensureReferencingBackupsIsMutable();
+      referencingBackups_.set(index, value);
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The names of the destination backups being created by copying
+     * this source backup. The backup names are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * Referencing backups may exist in different instances. The existence of
+     * any referencing backup prevents the backup from being deleted. When the
+     * copy operation is done (either successfully completed or cancelled or the
+     * destination backup is deleted), the reference to the backup is removed.
+     * </pre>
+     *
+     * <code>
+     * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The referencingBackups to add.
+     * @return This builder for chaining.
+     */
+    public Builder addReferencingBackups(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      ensureReferencingBackupsIsMutable();
+      referencingBackups_.add(value);
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The names of the destination backups being created by copying
+     * this source backup. The backup names are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * Referencing backups may exist in different instances. The existence of
+     * any referencing backup prevents the backup from being deleted. When the
+     * copy operation is done (either successfully completed or cancelled or the
+     * destination backup is deleted), the reference to the backup is removed.
+     * </pre>
+     *
+     * <code>
+     * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param values The referencingBackups to add.
+     * @return This builder for chaining.
+     */
+    public Builder addAllReferencingBackups(java.lang.Iterable<java.lang.String> values) {
+      ensureReferencingBackupsIsMutable();
+      com.google.protobuf.AbstractMessageLite.Builder.addAll(values, referencingBackups_);
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The names of the destination backups being created by copying
+     * this source backup. The backup names are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * Referencing backups may exist in different instances. The existence of
+     * any referencing backup prevents the backup from being deleted. When the
+     * copy operation is done (either successfully completed or cancelled or the
+     * destination backup is deleted), the reference to the backup is removed.
+     * </pre>
+     *
+     * <code>
+     * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearReferencingBackups() {
+      referencingBackups_ = com.google.protobuf.LazyStringArrayList.EMPTY;
+      bitField0_ = (bitField0_ & ~0x00000002);
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The names of the destination backups being created by copying
+     * this source backup. The backup names are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * Referencing backups may exist in different instances. The existence of
+     * any referencing backup prevents the backup from being deleted. When the
+     * copy operation is done (either successfully completed or cancelled or the
+     * destination backup is deleted), the reference to the backup is removed.
+     * </pre>
+     *
+     * <code>
+     * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The bytes of the referencingBackups to add.
+     * @return This builder for chaining.
+     */
+    public Builder addReferencingBackupsBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+      ensureReferencingBackupsIsMutable();
+      referencingBackups_.add(value);
+      onChanged();
+      return this;
+    }
+
+    private com.google.protobuf.Timestamp maxExpireTime_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Timestamp,
+            com.google.protobuf.Timestamp.Builder,
+            com.google.protobuf.TimestampOrBuilder>
+        maxExpireTimeBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The max allowed expiration time of the backup, with
+     * microseconds granularity. A backup's expiration time can be configured in
+     * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+     * copying an existing backup, the expiration time specified must be
+     * less than `Backup.max_expire_time`.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     *
+     * @return Whether the maxExpireTime field is set.
+     */
+    public boolean hasMaxExpireTime() {
+      return maxExpireTimeBuilder_ != null || maxExpireTime_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The max allowed expiration time of the backup, with
+     * microseconds granularity. A backup's expiration time can be configured in
+     * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+     * copying an existing backup, the expiration time specified must be
+     * less than `Backup.max_expire_time`.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     *
+     * @return The maxExpireTime.
+     */
+    public com.google.protobuf.Timestamp getMaxExpireTime() {
+      if (maxExpireTimeBuilder_ == null) {
+        return maxExpireTime_ == null
+            ? com.google.protobuf.Timestamp.getDefaultInstance()
+            : maxExpireTime_;
+      } else {
+        return maxExpireTimeBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The max allowed expiration time of the backup, with
+     * microseconds granularity. A backup's expiration time can be configured in
+     * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+     * copying an existing backup, the expiration time specified must be
+     * less than `Backup.max_expire_time`.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public Builder setMaxExpireTime(com.google.protobuf.Timestamp value) {
+      if (maxExpireTimeBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        maxExpireTime_ = value;
+        onChanged();
+      } else {
+        maxExpireTimeBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The max allowed expiration time of the backup, with
+     * microseconds granularity. A backup's expiration time can be configured in
+     * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+     * copying an existing backup, the expiration time specified must be
+     * less than `Backup.max_expire_time`.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public Builder setMaxExpireTime(com.google.protobuf.Timestamp.Builder builderForValue) {
+      if (maxExpireTimeBuilder_ == null) {
+        maxExpireTime_ = builderForValue.build();
+        onChanged();
+      } else {
+        maxExpireTimeBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The max allowed expiration time of the backup, with
+     * microseconds granularity. A backup's expiration time can be configured in
+     * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+     * copying an existing backup, the expiration time specified must be
+     * less than `Backup.max_expire_time`.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public Builder mergeMaxExpireTime(com.google.protobuf.Timestamp value) {
+      if (maxExpireTimeBuilder_ == null) {
+        if (maxExpireTime_ != null) {
+          maxExpireTime_ =
+              com.google.protobuf.Timestamp.newBuilder(maxExpireTime_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          maxExpireTime_ = value;
+        }
+        onChanged();
+      } else {
+        maxExpireTimeBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The max allowed expiration time of the backup, with
+     * microseconds granularity. A backup's expiration time can be configured in
+     * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+     * copying an existing backup, the expiration time specified must be
+     * less than `Backup.max_expire_time`.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public Builder clearMaxExpireTime() {
+      if (maxExpireTimeBuilder_ == null) {
+        maxExpireTime_ = null;
+        onChanged();
+      } else {
+        maxExpireTime_ = null;
+        maxExpireTimeBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The max allowed expiration time of the backup, with
+     * microseconds granularity. A backup's expiration time can be configured in
+     * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+     * copying an existing backup, the expiration time specified must be
+     * less than `Backup.max_expire_time`.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public com.google.protobuf.Timestamp.Builder getMaxExpireTimeBuilder() {
+
+      onChanged();
+      return getMaxExpireTimeFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The max allowed expiration time of the backup, with
+     * microseconds granularity. A backup's expiration time can be configured in
+     * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+     * copying an existing backup, the expiration time specified must be
+     * less than `Backup.max_expire_time`.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    public com.google.protobuf.TimestampOrBuilder getMaxExpireTimeOrBuilder() {
+      if (maxExpireTimeBuilder_ != null) {
+        return maxExpireTimeBuilder_.getMessageOrBuilder();
+      } else {
+        return maxExpireTime_ == null
+            ? com.google.protobuf.Timestamp.getDefaultInstance()
+            : maxExpireTime_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. The max allowed expiration time of the backup, with
+     * microseconds granularity. A backup's expiration time can be configured in
+     * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+     * copying an existing backup, the expiration time specified must be
+     * less than `Backup.max_expire_time`.
+     * </pre>
+     *
+     * <code>
+     * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+     * </code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Timestamp,
+            com.google.protobuf.Timestamp.Builder,
+            com.google.protobuf.TimestampOrBuilder>
+        getMaxExpireTimeFieldBuilder() {
+      if (maxExpireTimeBuilder_ == null) {
+        maxExpireTimeBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.protobuf.Timestamp,
+                com.google.protobuf.Timestamp.Builder,
+                com.google.protobuf.TimestampOrBuilder>(
+                getMaxExpireTime(), getParentForChildren(), isClean());
+        maxExpireTime_ = null;
+      }
+      return maxExpireTimeBuilder_;
+    }
+
     @java.lang.Override
     public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
       return super.setUnknownFields(unknownFields);
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupOrBuilder.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupOrBuilder.java
index 8810b28ee0c..e3fe5ccf08c 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupOrBuilder.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupOrBuilder.java
@@ -433,4 +433,140 @@ public interface BackupOrBuilder
    * @return The databaseDialect.
    */
   com.google.spanner.admin.database.v1.DatabaseDialect getDatabaseDialect();
+
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The names of the destination backups being created by copying
+   * this source backup. The backup names are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * Referencing backups may exist in different instances. The existence of
+   * any referencing backup prevents the backup from being deleted. When the
+   * copy operation is done (either successfully completed or cancelled or the
+   * destination backup is deleted), the reference to the backup is removed.
+   * </pre>
+   *
+   * <code>
+   * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return A list containing the referencingBackups.
+   */
+  java.util.List<java.lang.String> getReferencingBackupsList();
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The names of the destination backups being created by copying
+   * this source backup. The backup names are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * Referencing backups may exist in different instances. The existence of
+   * any referencing backup prevents the backup from being deleted. When the
+   * copy operation is done (either successfully completed or cancelled or the
+   * destination backup is deleted), the reference to the backup is removed.
+   * </pre>
+   *
+   * <code>
+   * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The count of referencingBackups.
+   */
+  int getReferencingBackupsCount();
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The names of the destination backups being created by copying
+   * this source backup. The backup names are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * Referencing backups may exist in different instances. The existence of
+   * any referencing backup prevents the backup from being deleted. When the
+   * copy operation is done (either successfully completed or cancelled or the
+   * destination backup is deleted), the reference to the backup is removed.
+   * </pre>
+   *
+   * <code>
+   * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @param index The index of the element to return.
+   * @return The referencingBackups at the given index.
+   */
+  java.lang.String getReferencingBackups(int index);
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The names of the destination backups being created by copying
+   * this source backup. The backup names are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * Referencing backups may exist in different instances. The existence of
+   * any referencing backup prevents the backup from being deleted. When the
+   * copy operation is done (either successfully completed or cancelled or the
+   * destination backup is deleted), the reference to the backup is removed.
+   * </pre>
+   *
+   * <code>
+   * repeated string referencing_backups = 11 [(.google.api.field_behavior) = OUTPUT_ONLY, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @param index The index of the value to return.
+   * @return The bytes of the referencingBackups at the given index.
+   */
+  com.google.protobuf.ByteString getReferencingBackupsBytes(int index);
+
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The max allowed expiration time of the backup, with
+   * microseconds granularity. A backup's expiration time can be configured in
+   * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+   * copying an existing backup, the expiration time specified must be
+   * less than `Backup.max_expire_time`.
+   * </pre>
+   *
+   * <code>
+   * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   *
+   * @return Whether the maxExpireTime field is set.
+   */
+  boolean hasMaxExpireTime();
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The max allowed expiration time of the backup, with
+   * microseconds granularity. A backup's expiration time can be configured in
+   * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+   * copying an existing backup, the expiration time specified must be
+   * less than `Backup.max_expire_time`.
+   * </pre>
+   *
+   * <code>
+   * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   *
+   * @return The maxExpireTime.
+   */
+  com.google.protobuf.Timestamp getMaxExpireTime();
+  /**
+   *
+   *
+   * <pre>
+   * Output only. The max allowed expiration time of the backup, with
+   * microseconds granularity. A backup's expiration time can be configured in
+   * multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+   * copying an existing backup, the expiration time specified must be
+   * less than `Backup.max_expire_time`.
+   * </pre>
+   *
+   * <code>
+   * .google.protobuf.Timestamp max_expire_time = 12 [(.google.api.field_behavior) = OUTPUT_ONLY];
+   * </code>
+   */
+  com.google.protobuf.TimestampOrBuilder getMaxExpireTimeOrBuilder();
 }
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupProto.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupProto.java
index aafa5c2fc9b..d5a258d0e52 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupProto.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupProto.java
@@ -39,6 +39,14 @@ public static void registerAllExtensions(com.google.protobuf.ExtensionRegistry r
       internal_static_google_spanner_admin_database_v1_CreateBackupMetadata_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_google_spanner_admin_database_v1_CreateBackupMetadata_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_spanner_admin_database_v1_CopyBackupRequest_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_spanner_admin_database_v1_CopyBackupRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_fieldAccessorTable;
   static final com.google.protobuf.Descriptors.Descriptor
       internal_static_google_spanner_admin_database_v1_UpdateBackupRequest_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
@@ -75,6 +83,10 @@ public static void registerAllExtensions(com.google.protobuf.ExtensionRegistry r
       internal_static_google_spanner_admin_database_v1_CreateBackupEncryptionConfig_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_google_spanner_admin_database_v1_CreateBackupEncryptionConfig_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_fieldAccessorTable;
 
   public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     return descriptor;
@@ -86,90 +98,115 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     java.lang.String[] descriptorData = {
       "\n-google/spanner/admin/database/v1/backu"
           + "p.proto\022 google.spanner.admin.database.v"
-          + "1\032\034google/api/annotations.proto\032\037google/"
-          + "api/field_behavior.proto\032\031google/api/res"
-          + "ource.proto\032#google/longrunning/operatio"
-          + "ns.proto\032 google/protobuf/field_mask.pro"
-          + "to\032\037google/protobuf/timestamp.proto\032-goo"
-          + "gle/spanner/admin/database/v1/common.pro"
-          + "to\"\305\005\n\006Backup\0226\n\010database\030\002 \001(\tB$\372A!\n\037sp"
-          + "anner.googleapis.com/Database\0220\n\014version"
-          + "_time\030\t \001(\0132\032.google.protobuf.Timestamp\022"
-          + "/\n\013expire_time\030\003 \001(\0132\032.google.protobuf.T"
-          + "imestamp\022\014\n\004name\030\001 \001(\t\0224\n\013create_time\030\004 "
-          + "\001(\0132\032.google.protobuf.TimestampB\003\340A\003\022\027\n\n"
-          + "size_bytes\030\005 \001(\003B\003\340A\003\022B\n\005state\030\006 \001(\0162..g"
-          + "oogle.spanner.admin.database.v1.Backup.S"
-          + "tateB\003\340A\003\022F\n\025referencing_databases\030\007 \003(\t"
-          + "B\'\340A\003\372A!\n\037spanner.googleapis.com/Databas"
-          + "e\022N\n\017encryption_info\030\010 \001(\01320.google.span"
-          + "ner.admin.database.v1.EncryptionInfoB\003\340A"
-          + "\003\022P\n\020database_dialect\030\n \001(\01621.google.spa"
-          + "nner.admin.database.v1.DatabaseDialectB\003"
-          + "\340A\003\"7\n\005State\022\025\n\021STATE_UNSPECIFIED\020\000\022\014\n\010C"
-          + "REATING\020\001\022\t\n\005READY\020\002:\\\352AY\n\035spanner.googl"
-          + "eapis.com/Backup\0228projects/{project}/ins"
-          + "tances/{instance}/backups/{backup}\"\205\002\n\023C"
-          + "reateBackupRequest\0227\n\006parent\030\001 \001(\tB\'\340A\002\372"
-          + "A!\n\037spanner.googleapis.com/Instance\022\026\n\tb"
-          + "ackup_id\030\002 \001(\tB\003\340A\002\022=\n\006backup\030\003 \001(\0132(.go"
-          + "ogle.spanner.admin.database.v1.BackupB\003\340"
-          + "A\002\022^\n\021encryption_config\030\004 \001(\0132>.google.s"
-          + "panner.admin.database.v1.CreateBackupEnc"
-          + "ryptionConfigB\003\340A\001\"\370\001\n\024CreateBackupMetad"
-          + "ata\0220\n\004name\030\001 \001(\tB\"\372A\037\n\035spanner.googleap"
-          + "is.com/Backup\0226\n\010database\030\002 \001(\tB$\372A!\n\037sp"
-          + "anner.googleapis.com/Database\022E\n\010progres"
-          + "s\030\003 \001(\01323.google.spanner.admin.database."
-          + "v1.OperationProgress\022/\n\013cancel_time\030\004 \001("
-          + "\0132\032.google.protobuf.Timestamp\"\212\001\n\023Update"
-          + "BackupRequest\022=\n\006backup\030\001 \001(\0132(.google.s"
-          + "panner.admin.database.v1.BackupB\003\340A\002\0224\n\013"
-          + "update_mask\030\002 \001(\0132\032.google.protobuf.Fiel"
-          + "dMaskB\003\340A\002\"G\n\020GetBackupRequest\0223\n\004name\030\001"
-          + " \001(\tB%\340A\002\372A\037\n\035spanner.googleapis.com/Bac"
-          + "kup\"J\n\023DeleteBackupRequest\0223\n\004name\030\001 \001(\t"
-          + "B%\340A\002\372A\037\n\035spanner.googleapis.com/Backup\""
-          + "\204\001\n\022ListBackupsRequest\0227\n\006parent\030\001 \001(\tB\'"
-          + "\340A\002\372A!\n\037spanner.googleapis.com/Instance\022"
-          + "\016\n\006filter\030\002 \001(\t\022\021\n\tpage_size\030\003 \001(\005\022\022\n\npa"
-          + "ge_token\030\004 \001(\t\"i\n\023ListBackupsResponse\0229\n"
-          + "\007backups\030\001 \003(\0132(.google.spanner.admin.da"
-          + "tabase.v1.Backup\022\027\n\017next_page_token\030\002 \001("
-          + "\t\"\215\001\n\033ListBackupOperationsRequest\0227\n\006par"
-          + "ent\030\001 \001(\tB\'\340A\002\372A!\n\037spanner.googleapis.co"
-          + "m/Instance\022\016\n\006filter\030\002 \001(\t\022\021\n\tpage_size\030"
-          + "\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\"j\n\034ListBackupO"
-          + "perationsResponse\0221\n\noperations\030\001 \003(\0132\035."
-          + "google.longrunning.Operation\022\027\n\017next_pag"
-          + "e_token\030\002 \001(\t\"\342\001\n\nBackupInfo\0222\n\006backup\030\001"
-          + " \001(\tB\"\372A\037\n\035spanner.googleapis.com/Backup"
-          + "\0220\n\014version_time\030\004 \001(\0132\032.google.protobuf"
-          + ".Timestamp\022/\n\013create_time\030\002 \001(\0132\032.google"
-          + ".protobuf.Timestamp\022=\n\017source_database\030\003"
-          + " \001(\tB$\372A!\n\037spanner.googleapis.com/Databa"
-          + "se\"\335\002\n\034CreateBackupEncryptionConfig\022k\n\017e"
-          + "ncryption_type\030\001 \001(\0162M.google.spanner.ad"
-          + "min.database.v1.CreateBackupEncryptionCo"
-          + "nfig.EncryptionTypeB\003\340A\002\022?\n\014kms_key_name"
-          + "\030\002 \001(\tB)\340A\001\372A#\n!cloudkms.googleapis.com/"
-          + "CryptoKey\"\216\001\n\016EncryptionType\022\037\n\033ENCRYPTI"
-          + "ON_TYPE_UNSPECIFIED\020\000\022\033\n\027USE_DATABASE_EN"
-          + "CRYPTION\020\001\022\035\n\031GOOGLE_DEFAULT_ENCRYPTION\020"
-          + "\002\022\037\n\033CUSTOMER_MANAGED_ENCRYPTION\020\003B\377\001\n$c"
-          + "om.google.spanner.admin.database.v1B\013Bac"
-          + "kupProtoP\001ZHgoogle.golang.org/genproto/g"
-          + "oogleapis/spanner/admin/database/v1;data"
-          + "base\252\002&Google.Cloud.Spanner.Admin.Databa"
-          + "se.V1\312\002&Google\\Cloud\\Spanner\\Admin\\Datab"
-          + "ase\\V1\352\002+Google::Cloud::Spanner::Admin::"
-          + "Database::V1b\006proto3"
+          + "1\032\037google/api/field_behavior.proto\032\031goog"
+          + "le/api/resource.proto\032#google/longrunnin"
+          + "g/operations.proto\032 google/protobuf/fiel"
+          + "d_mask.proto\032\037google/protobuf/timestamp."
+          + "proto\032-google/spanner/admin/database/v1/"
+          + "common.proto\"\303\006\n\006Backup\0226\n\010database\030\002 \001("
+          + "\tB$\372A!\n\037spanner.googleapis.com/Database\022"
+          + "0\n\014version_time\030\t \001(\0132\032.google.protobuf."
+          + "Timestamp\022/\n\013expire_time\030\003 \001(\0132\032.google."
+          + "protobuf.Timestamp\022\014\n\004name\030\001 \001(\t\0224\n\013crea"
+          + "te_time\030\004 \001(\0132\032.google.protobuf.Timestam"
+          + "pB\003\340A\003\022\027\n\nsize_bytes\030\005 \001(\003B\003\340A\003\022B\n\005state"
+          + "\030\006 \001(\0162..google.spanner.admin.database.v"
+          + "1.Backup.StateB\003\340A\003\022F\n\025referencing_datab"
+          + "ases\030\007 \003(\tB\'\340A\003\372A!\n\037spanner.googleapis.c"
+          + "om/Database\022N\n\017encryption_info\030\010 \001(\01320.g"
+          + "oogle.spanner.admin.database.v1.Encrypti"
+          + "onInfoB\003\340A\003\022P\n\020database_dialect\030\n \001(\01621."
+          + "google.spanner.admin.database.v1.Databas"
+          + "eDialectB\003\340A\003\022B\n\023referencing_backups\030\013 \003"
+          + "(\tB%\340A\003\372A\037\n\035spanner.googleapis.com/Backu"
+          + "p\0228\n\017max_expire_time\030\014 \001(\0132\032.google.prot"
+          + "obuf.TimestampB\003\340A\003\"7\n\005State\022\025\n\021STATE_UN"
+          + "SPECIFIED\020\000\022\014\n\010CREATING\020\001\022\t\n\005READY\020\002:\\\352A"
+          + "Y\n\035spanner.googleapis.com/Backup\0228projec"
+          + "ts/{project}/instances/{instance}/backup"
+          + "s/{backup}\"\205\002\n\023CreateBackupRequest\0227\n\006pa"
+          + "rent\030\001 \001(\tB\'\340A\002\372A!\n\037spanner.googleapis.c"
+          + "om/Instance\022\026\n\tbackup_id\030\002 \001(\tB\003\340A\002\022=\n\006b"
+          + "ackup\030\003 \001(\0132(.google.spanner.admin.datab"
+          + "ase.v1.BackupB\003\340A\002\022^\n\021encryption_config\030"
+          + "\004 \001(\0132>.google.spanner.admin.database.v1"
+          + ".CreateBackupEncryptionConfigB\003\340A\001\"\370\001\n\024C"
+          + "reateBackupMetadata\0220\n\004name\030\001 \001(\tB\"\372A\037\n\035"
+          + "spanner.googleapis.com/Backup\0226\n\010databas"
+          + "e\030\002 \001(\tB$\372A!\n\037spanner.googleapis.com/Dat"
+          + "abase\022E\n\010progress\030\003 \001(\01323.google.spanner"
+          + ".admin.database.v1.OperationProgress\022/\n\013"
+          + "cancel_time\030\004 \001(\0132\032.google.protobuf.Time"
+          + "stamp\"\266\002\n\021CopyBackupRequest\0227\n\006parent\030\001 "
+          + "\001(\tB\'\340A\002\372A!\n\037spanner.googleapis.com/Inst"
+          + "ance\022\026\n\tbackup_id\030\002 \001(\tB\003\340A\002\022<\n\rsource_b"
+          + "ackup\030\003 \001(\tB%\340A\002\372A\037\n\035spanner.googleapis."
+          + "com/Backup\0224\n\013expire_time\030\004 \001(\0132\032.google"
+          + ".protobuf.TimestampB\003\340A\002\022\\\n\021encryption_c"
+          + "onfig\030\005 \001(\0132<.google.spanner.admin.datab"
+          + "ase.v1.CopyBackupEncryptionConfigB\003\340A\001\"\371"
+          + "\001\n\022CopyBackupMetadata\0220\n\004name\030\001 \001(\tB\"\372A\037"
+          + "\n\035spanner.googleapis.com/Backup\0229\n\rsourc"
+          + "e_backup\030\002 \001(\tB\"\372A\037\n\035spanner.googleapis."
+          + "com/Backup\022E\n\010progress\030\003 \001(\01323.google.sp"
+          + "anner.admin.database.v1.OperationProgres"
+          + "s\022/\n\013cancel_time\030\004 \001(\0132\032.google.protobuf"
+          + ".Timestamp\"\212\001\n\023UpdateBackupRequest\022=\n\006ba"
+          + "ckup\030\001 \001(\0132(.google.spanner.admin.databa"
+          + "se.v1.BackupB\003\340A\002\0224\n\013update_mask\030\002 \001(\0132\032"
+          + ".google.protobuf.FieldMaskB\003\340A\002\"G\n\020GetBa"
+          + "ckupRequest\0223\n\004name\030\001 \001(\tB%\340A\002\372A\037\n\035spann"
+          + "er.googleapis.com/Backup\"J\n\023DeleteBackup"
+          + "Request\0223\n\004name\030\001 \001(\tB%\340A\002\372A\037\n\035spanner.g"
+          + "oogleapis.com/Backup\"\204\001\n\022ListBackupsRequ"
+          + "est\0227\n\006parent\030\001 \001(\tB\'\340A\002\372A!\n\037spanner.goo"
+          + "gleapis.com/Instance\022\016\n\006filter\030\002 \001(\t\022\021\n\t"
+          + "page_size\030\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\"i\n\023L"
+          + "istBackupsResponse\0229\n\007backups\030\001 \003(\0132(.go"
+          + "ogle.spanner.admin.database.v1.Backup\022\027\n"
+          + "\017next_page_token\030\002 \001(\t\"\215\001\n\033ListBackupOpe"
+          + "rationsRequest\0227\n\006parent\030\001 \001(\tB\'\340A\002\372A!\n\037"
+          + "spanner.googleapis.com/Instance\022\016\n\006filte"
+          + "r\030\002 \001(\t\022\021\n\tpage_size\030\003 \001(\005\022\022\n\npage_token"
+          + "\030\004 \001(\t\"j\n\034ListBackupOperationsResponse\0221"
+          + "\n\noperations\030\001 \003(\0132\035.google.longrunning."
+          + "Operation\022\027\n\017next_page_token\030\002 \001(\t\"\342\001\n\nB"
+          + "ackupInfo\0222\n\006backup\030\001 \001(\tB\"\372A\037\n\035spanner."
+          + "googleapis.com/Backup\0220\n\014version_time\030\004 "
+          + "\001(\0132\032.google.protobuf.Timestamp\022/\n\013creat"
+          + "e_time\030\002 \001(\0132\032.google.protobuf.Timestamp"
+          + "\022=\n\017source_database\030\003 \001(\tB$\372A!\n\037spanner."
+          + "googleapis.com/Database\"\335\002\n\034CreateBackup"
+          + "EncryptionConfig\022k\n\017encryption_type\030\001 \001("
+          + "\0162M.google.spanner.admin.database.v1.Cre"
+          + "ateBackupEncryptionConfig.EncryptionType"
+          + "B\003\340A\002\022?\n\014kms_key_name\030\002 \001(\tB)\340A\001\372A#\n!clo"
+          + "udkms.googleapis.com/CryptoKey\"\216\001\n\016Encry"
+          + "ptionType\022\037\n\033ENCRYPTION_TYPE_UNSPECIFIED"
+          + "\020\000\022\033\n\027USE_DATABASE_ENCRYPTION\020\001\022\035\n\031GOOGL"
+          + "E_DEFAULT_ENCRYPTION\020\002\022\037\n\033CUSTOMER_MANAG"
+          + "ED_ENCRYPTION\020\003\"\351\002\n\032CopyBackupEncryption"
+          + "Config\022i\n\017encryption_type\030\001 \001(\0162K.google"
+          + ".spanner.admin.database.v1.CopyBackupEnc"
+          + "ryptionConfig.EncryptionTypeB\003\340A\002\022?\n\014kms"
+          + "_key_name\030\002 \001(\tB)\340A\001\372A#\n!cloudkms.google"
+          + "apis.com/CryptoKey\"\236\001\n\016EncryptionType\022\037\n"
+          + "\033ENCRYPTION_TYPE_UNSPECIFIED\020\000\022+\n\'USE_CO"
+          + "NFIG_DEFAULT_OR_BACKUP_ENCRYPTION\020\001\022\035\n\031G"
+          + "OOGLE_DEFAULT_ENCRYPTION\020\002\022\037\n\033CUSTOMER_M"
+          + "ANAGED_ENCRYPTION\020\003B\377\001\n$com.google.spann"
+          + "er.admin.database.v1B\013BackupProtoP\001ZHgoo"
+          + "gle.golang.org/genproto/googleapis/spann"
+          + "er/admin/database/v1;database\252\002&Google.C"
+          + "loud.Spanner.Admin.Database.V1\312\002&Google\\"
+          + "Cloud\\Spanner\\Admin\\Database\\V1\352\002+Google"
+          + "::Cloud::Spanner::Admin::Database::V1b\006p"
+          + "roto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
             descriptorData,
             new com.google.protobuf.Descriptors.FileDescriptor[] {
-              com.google.api.AnnotationsProto.getDescriptor(),
               com.google.api.FieldBehaviorProto.getDescriptor(),
               com.google.api.ResourceProto.getDescriptor(),
               com.google.longrunning.OperationsProto.getDescriptor(),
@@ -193,6 +230,8 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ReferencingDatabases",
               "EncryptionInfo",
               "DatabaseDialect",
+              "ReferencingBackups",
+              "MaxExpireTime",
             });
     internal_static_google_spanner_admin_database_v1_CreateBackupRequest_descriptor =
         getDescriptor().getMessageTypes().get(1);
@@ -210,8 +249,24 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
             new java.lang.String[] {
               "Name", "Database", "Progress", "CancelTime",
             });
-    internal_static_google_spanner_admin_database_v1_UpdateBackupRequest_descriptor =
+    internal_static_google_spanner_admin_database_v1_CopyBackupRequest_descriptor =
         getDescriptor().getMessageTypes().get(3);
+    internal_static_google_spanner_admin_database_v1_CopyBackupRequest_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_spanner_admin_database_v1_CopyBackupRequest_descriptor,
+            new java.lang.String[] {
+              "Parent", "BackupId", "SourceBackup", "ExpireTime", "EncryptionConfig",
+            });
+    internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_descriptor =
+        getDescriptor().getMessageTypes().get(4);
+    internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_descriptor,
+            new java.lang.String[] {
+              "Name", "SourceBackup", "Progress", "CancelTime",
+            });
+    internal_static_google_spanner_admin_database_v1_UpdateBackupRequest_descriptor =
+        getDescriptor().getMessageTypes().get(5);
     internal_static_google_spanner_admin_database_v1_UpdateBackupRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_spanner_admin_database_v1_UpdateBackupRequest_descriptor,
@@ -219,7 +274,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Backup", "UpdateMask",
             });
     internal_static_google_spanner_admin_database_v1_GetBackupRequest_descriptor =
-        getDescriptor().getMessageTypes().get(4);
+        getDescriptor().getMessageTypes().get(6);
     internal_static_google_spanner_admin_database_v1_GetBackupRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_spanner_admin_database_v1_GetBackupRequest_descriptor,
@@ -227,7 +282,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Name",
             });
     internal_static_google_spanner_admin_database_v1_DeleteBackupRequest_descriptor =
-        getDescriptor().getMessageTypes().get(5);
+        getDescriptor().getMessageTypes().get(7);
     internal_static_google_spanner_admin_database_v1_DeleteBackupRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_spanner_admin_database_v1_DeleteBackupRequest_descriptor,
@@ -235,7 +290,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Name",
             });
     internal_static_google_spanner_admin_database_v1_ListBackupsRequest_descriptor =
-        getDescriptor().getMessageTypes().get(6);
+        getDescriptor().getMessageTypes().get(8);
     internal_static_google_spanner_admin_database_v1_ListBackupsRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_spanner_admin_database_v1_ListBackupsRequest_descriptor,
@@ -243,7 +298,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Parent", "Filter", "PageSize", "PageToken",
             });
     internal_static_google_spanner_admin_database_v1_ListBackupsResponse_descriptor =
-        getDescriptor().getMessageTypes().get(7);
+        getDescriptor().getMessageTypes().get(9);
     internal_static_google_spanner_admin_database_v1_ListBackupsResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_spanner_admin_database_v1_ListBackupsResponse_descriptor,
@@ -251,7 +306,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Backups", "NextPageToken",
             });
     internal_static_google_spanner_admin_database_v1_ListBackupOperationsRequest_descriptor =
-        getDescriptor().getMessageTypes().get(8);
+        getDescriptor().getMessageTypes().get(10);
     internal_static_google_spanner_admin_database_v1_ListBackupOperationsRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_spanner_admin_database_v1_ListBackupOperationsRequest_descriptor,
@@ -259,7 +314,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Parent", "Filter", "PageSize", "PageToken",
             });
     internal_static_google_spanner_admin_database_v1_ListBackupOperationsResponse_descriptor =
-        getDescriptor().getMessageTypes().get(9);
+        getDescriptor().getMessageTypes().get(11);
     internal_static_google_spanner_admin_database_v1_ListBackupOperationsResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_spanner_admin_database_v1_ListBackupOperationsResponse_descriptor,
@@ -267,7 +322,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Operations", "NextPageToken",
             });
     internal_static_google_spanner_admin_database_v1_BackupInfo_descriptor =
-        getDescriptor().getMessageTypes().get(10);
+        getDescriptor().getMessageTypes().get(12);
     internal_static_google_spanner_admin_database_v1_BackupInfo_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_spanner_admin_database_v1_BackupInfo_descriptor,
@@ -275,13 +330,21 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Backup", "VersionTime", "CreateTime", "SourceDatabase",
             });
     internal_static_google_spanner_admin_database_v1_CreateBackupEncryptionConfig_descriptor =
-        getDescriptor().getMessageTypes().get(11);
+        getDescriptor().getMessageTypes().get(13);
     internal_static_google_spanner_admin_database_v1_CreateBackupEncryptionConfig_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_spanner_admin_database_v1_CreateBackupEncryptionConfig_descriptor,
             new java.lang.String[] {
               "EncryptionType", "KmsKeyName",
             });
+    internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_descriptor =
+        getDescriptor().getMessageTypes().get(14);
+    internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_descriptor,
+            new java.lang.String[] {
+              "EncryptionType", "KmsKeyName",
+            });
     com.google.protobuf.ExtensionRegistry registry =
         com.google.protobuf.ExtensionRegistry.newInstance();
     registry.add(com.google.api.FieldBehaviorProto.fieldBehavior);
@@ -289,7 +352,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     registry.add(com.google.api.ResourceProto.resourceReference);
     com.google.protobuf.Descriptors.FileDescriptor.internalUpdateFileDescriptor(
         descriptor, registry);
-    com.google.api.AnnotationsProto.getDescriptor();
     com.google.api.FieldBehaviorProto.getDescriptor();
     com.google.api.ResourceProto.getDescriptor();
     com.google.longrunning.OperationsProto.getDescriptor();
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CommonProto.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CommonProto.java
index 157e9098686..73dfc1efb12 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CommonProto.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CommonProto.java
@@ -50,46 +50,45 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     java.lang.String[] descriptorData = {
       "\n-google/spanner/admin/database/v1/commo"
           + "n.proto\022 google.spanner.admin.database.v"
-          + "1\032\034google/api/annotations.proto\032\037google/"
-          + "api/field_behavior.proto\032\031google/api/res"
-          + "ource.proto\032\037google/protobuf/timestamp.p"
-          + "roto\032\027google/rpc/status.proto\"\213\001\n\021Operat"
-          + "ionProgress\022\030\n\020progress_percent\030\001 \001(\005\022.\n"
-          + "\nstart_time\030\002 \001(\0132\032.google.protobuf.Time"
-          + "stamp\022,\n\010end_time\030\003 \001(\0132\032.google.protobu"
-          + "f.Timestamp\"P\n\020EncryptionConfig\022<\n\014kms_k"
-          + "ey_name\030\002 \001(\tB&\372A#\n!cloudkms.googleapis."
-          + "com/CryptoKey\"\302\002\n\016EncryptionInfo\022S\n\017encr"
-          + "yption_type\030\003 \001(\01625.google.spanner.admin"
-          + ".database.v1.EncryptionInfo.TypeB\003\340A\003\0222\n"
-          + "\021encryption_status\030\004 \001(\0132\022.google.rpc.St"
-          + "atusB\003\340A\003\022I\n\017kms_key_version\030\002 \001(\tB0\340A\003\372"
-          + "A*\n(cloudkms.googleapis.com/CryptoKeyVer"
-          + "sion\"\\\n\004Type\022\024\n\020TYPE_UNSPECIFIED\020\000\022\035\n\031GO"
-          + "OGLE_DEFAULT_ENCRYPTION\020\001\022\037\n\033CUSTOMER_MA"
-          + "NAGED_ENCRYPTION\020\002*\\\n\017DatabaseDialect\022 \n"
-          + "\034DATABASE_DIALECT_UNSPECIFIED\020\000\022\027\n\023GOOGL"
-          + "E_STANDARD_SQL\020\001\022\016\n\nPOSTGRESQL\020\002B\244\004\n$com"
-          + ".google.spanner.admin.database.v1B\013Commo"
-          + "nProtoP\001ZHgoogle.golang.org/genproto/goo"
-          + "gleapis/spanner/admin/database/v1;databa"
-          + "se\252\002&Google.Cloud.Spanner.Admin.Database"
-          + ".V1\312\002&Google\\Cloud\\Spanner\\Admin\\Databas"
-          + "e\\V1\352\002+Google::Cloud::Spanner::Admin::Da"
-          + "tabase::V1\352Ax\n!cloudkms.googleapis.com/C"
-          + "ryptoKey\022Sprojects/{project}/locations/{"
-          + "location}/keyRings/{key_ring}/cryptoKeys"
-          + "/{crypto_key}\352A\246\001\n(cloudkms.googleapis.c"
-          + "om/CryptoKeyVersion\022zprojects/{project}/"
-          + "locations/{location}/keyRings/{key_ring}"
-          + "/cryptoKeys/{crypto_key}/cryptoKeyVersio"
-          + "ns/{crypto_key_version}b\006proto3"
+          + "1\032\037google/api/field_behavior.proto\032\031goog"
+          + "le/api/resource.proto\032\037google/protobuf/t"
+          + "imestamp.proto\032\027google/rpc/status.proto\""
+          + "\213\001\n\021OperationProgress\022\030\n\020progress_percen"
+          + "t\030\001 \001(\005\022.\n\nstart_time\030\002 \001(\0132\032.google.pro"
+          + "tobuf.Timestamp\022,\n\010end_time\030\003 \001(\0132\032.goog"
+          + "le.protobuf.Timestamp\"P\n\020EncryptionConfi"
+          + "g\022<\n\014kms_key_name\030\002 \001(\tB&\372A#\n!cloudkms.g"
+          + "oogleapis.com/CryptoKey\"\302\002\n\016EncryptionIn"
+          + "fo\022S\n\017encryption_type\030\003 \001(\01625.google.spa"
+          + "nner.admin.database.v1.EncryptionInfo.Ty"
+          + "peB\003\340A\003\0222\n\021encryption_status\030\004 \001(\0132\022.goo"
+          + "gle.rpc.StatusB\003\340A\003\022I\n\017kms_key_version\030\002"
+          + " \001(\tB0\340A\003\372A*\n(cloudkms.googleapis.com/Cr"
+          + "yptoKeyVersion\"\\\n\004Type\022\024\n\020TYPE_UNSPECIFI"
+          + "ED\020\000\022\035\n\031GOOGLE_DEFAULT_ENCRYPTION\020\001\022\037\n\033C"
+          + "USTOMER_MANAGED_ENCRYPTION\020\002*\\\n\017Database"
+          + "Dialect\022 \n\034DATABASE_DIALECT_UNSPECIFIED\020"
+          + "\000\022\027\n\023GOOGLE_STANDARD_SQL\020\001\022\016\n\nPOSTGRESQL"
+          + "\020\002B\244\004\n$com.google.spanner.admin.database"
+          + ".v1B\013CommonProtoP\001ZHgoogle.golang.org/ge"
+          + "nproto/googleapis/spanner/admin/database"
+          + "/v1;database\252\002&Google.Cloud.Spanner.Admi"
+          + "n.Database.V1\312\002&Google\\Cloud\\Spanner\\Adm"
+          + "in\\Database\\V1\352\002+Google::Cloud::Spanner:"
+          + ":Admin::Database::V1\352Ax\n!cloudkms.google"
+          + "apis.com/CryptoKey\022Sprojects/{project}/l"
+          + "ocations/{location}/keyRings/{key_ring}/"
+          + "cryptoKeys/{crypto_key}\352A\246\001\n(cloudkms.go"
+          + "ogleapis.com/CryptoKeyVersion\022zprojects/"
+          + "{project}/locations/{location}/keyRings/"
+          + "{key_ring}/cryptoKeys/{crypto_key}/crypt"
+          + "oKeyVersions/{crypto_key_version}b\006proto"
+          + "3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
             descriptorData,
             new com.google.protobuf.Descriptors.FileDescriptor[] {
-              com.google.api.AnnotationsProto.getDescriptor(),
               com.google.api.FieldBehaviorProto.getDescriptor(),
               com.google.api.ResourceProto.getDescriptor(),
               com.google.protobuf.TimestampProto.getDescriptor(),
@@ -126,7 +125,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     registry.add(com.google.api.ResourceProto.resourceReference);
     com.google.protobuf.Descriptors.FileDescriptor.internalUpdateFileDescriptor(
         descriptor, registry);
-    com.google.api.AnnotationsProto.getDescriptor();
     com.google.api.FieldBehaviorProto.getDescriptor();
     com.google.api.ResourceProto.getDescriptor();
     com.google.protobuf.TimestampProto.getDescriptor();
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupEncryptionConfig.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupEncryptionConfig.java
new file mode 100644
index 00000000000..ea29df0725f
--- /dev/null
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupEncryptionConfig.java
@@ -0,0 +1,1057 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/spanner/admin/database/v1/backup.proto
+
+package com.google.spanner.admin.database.v1;
+
+/**
+ *
+ *
+ * <pre>
+ * Encryption configuration for the copied backup.
+ * </pre>
+ *
+ * Protobuf type {@code google.spanner.admin.database.v1.CopyBackupEncryptionConfig}
+ */
+public final class CopyBackupEncryptionConfig extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.spanner.admin.database.v1.CopyBackupEncryptionConfig)
+    CopyBackupEncryptionConfigOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use CopyBackupEncryptionConfig.newBuilder() to construct.
+  private CopyBackupEncryptionConfig(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private CopyBackupEncryptionConfig() {
+    encryptionType_ = 0;
+    kmsKeyName_ = "";
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new CopyBackupEncryptionConfig();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private CopyBackupEncryptionConfig(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 8:
+            {
+              int rawValue = input.readEnum();
+
+              encryptionType_ = rawValue;
+              break;
+            }
+          case 18:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              kmsKeyName_ = s;
+              break;
+            }
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.spanner.admin.database.v1.BackupProto
+        .internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.spanner.admin.database.v1.BackupProto
+        .internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.class,
+            com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.Builder.class);
+  }
+
+  /**
+   *
+   *
+   * <pre>
+   * Encryption types for the backup.
+   * </pre>
+   *
+   * Protobuf enum {@code
+   * google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType}
+   */
+  public enum EncryptionType implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     *
+     *
+     * <pre>
+     * Unspecified. Do not use.
+     * </pre>
+     *
+     * <code>ENCRYPTION_TYPE_UNSPECIFIED = 0;</code>
+     */
+    ENCRYPTION_TYPE_UNSPECIFIED(0),
+    /**
+     *
+     *
+     * <pre>
+     * This is the default option for [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup]
+     * when [encryption_config][google.spanner.admin.database.v1.CopyBackupEncryptionConfig] is not specified.
+     * For example, if the source backup is using `Customer_Managed_Encryption`,
+     * the backup will be using the same Cloud KMS key as the source backup.
+     * </pre>
+     *
+     * <code>USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION = 1;</code>
+     */
+    USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION(1),
+    /**
+     *
+     *
+     * <pre>
+     * Use Google default encryption.
+     * </pre>
+     *
+     * <code>GOOGLE_DEFAULT_ENCRYPTION = 2;</code>
+     */
+    GOOGLE_DEFAULT_ENCRYPTION(2),
+    /**
+     *
+     *
+     * <pre>
+     * Use customer managed encryption. If specified, `kms_key_name`
+     * must contain a valid Cloud KMS key.
+     * </pre>
+     *
+     * <code>CUSTOMER_MANAGED_ENCRYPTION = 3;</code>
+     */
+    CUSTOMER_MANAGED_ENCRYPTION(3),
+    UNRECOGNIZED(-1),
+    ;
+
+    /**
+     *
+     *
+     * <pre>
+     * Unspecified. Do not use.
+     * </pre>
+     *
+     * <code>ENCRYPTION_TYPE_UNSPECIFIED = 0;</code>
+     */
+    public static final int ENCRYPTION_TYPE_UNSPECIFIED_VALUE = 0;
+    /**
+     *
+     *
+     * <pre>
+     * This is the default option for [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup]
+     * when [encryption_config][google.spanner.admin.database.v1.CopyBackupEncryptionConfig] is not specified.
+     * For example, if the source backup is using `Customer_Managed_Encryption`,
+     * the backup will be using the same Cloud KMS key as the source backup.
+     * </pre>
+     *
+     * <code>USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION = 1;</code>
+     */
+    public static final int USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION_VALUE = 1;
+    /**
+     *
+     *
+     * <pre>
+     * Use Google default encryption.
+     * </pre>
+     *
+     * <code>GOOGLE_DEFAULT_ENCRYPTION = 2;</code>
+     */
+    public static final int GOOGLE_DEFAULT_ENCRYPTION_VALUE = 2;
+    /**
+     *
+     *
+     * <pre>
+     * Use customer managed encryption. If specified, `kms_key_name`
+     * must contain a valid Cloud KMS key.
+     * </pre>
+     *
+     * <code>CUSTOMER_MANAGED_ENCRYPTION = 3;</code>
+     */
+    public static final int CUSTOMER_MANAGED_ENCRYPTION_VALUE = 3;
+
+    public final int getNumber() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalArgumentException(
+            "Can't get the number of an unknown enum value.");
+      }
+      return value;
+    }
+
+    /**
+     * @param value The numeric wire value of the corresponding enum entry.
+     * @return The enum associated with the given numeric wire value.
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
+    public static EncryptionType valueOf(int value) {
+      return forNumber(value);
+    }
+
+    /**
+     * @param value The numeric wire value of the corresponding enum entry.
+     * @return The enum associated with the given numeric wire value.
+     */
+    public static EncryptionType forNumber(int value) {
+      switch (value) {
+        case 0:
+          return ENCRYPTION_TYPE_UNSPECIFIED;
+        case 1:
+          return USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION;
+        case 2:
+          return GOOGLE_DEFAULT_ENCRYPTION;
+        case 3:
+          return CUSTOMER_MANAGED_ENCRYPTION;
+        default:
+          return null;
+      }
+    }
+
+    public static com.google.protobuf.Internal.EnumLiteMap<EncryptionType> internalGetValueMap() {
+      return internalValueMap;
+    }
+
+    private static final com.google.protobuf.Internal.EnumLiteMap<EncryptionType> internalValueMap =
+        new com.google.protobuf.Internal.EnumLiteMap<EncryptionType>() {
+          public EncryptionType findValueByNumber(int number) {
+            return EncryptionType.forNumber(number);
+          }
+        };
+
+    public final com.google.protobuf.Descriptors.EnumValueDescriptor getValueDescriptor() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalStateException(
+            "Can't get the descriptor of an unrecognized enum value.");
+      }
+      return getDescriptor().getValues().get(ordinal());
+    }
+
+    public final com.google.protobuf.Descriptors.EnumDescriptor getDescriptorForType() {
+      return getDescriptor();
+    }
+
+    public static final com.google.protobuf.Descriptors.EnumDescriptor getDescriptor() {
+      return com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.getDescriptor()
+          .getEnumTypes()
+          .get(0);
+    }
+
+    private static final EncryptionType[] VALUES = values();
+
+    public static EncryptionType valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+      if (desc.getType() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException("EnumValueDescriptor is not for this type.");
+      }
+      if (desc.getIndex() == -1) {
+        return UNRECOGNIZED;
+      }
+      return VALUES[desc.getIndex()];
+    }
+
+    private final int value;
+
+    private EncryptionType(int value) {
+      this.value = value;
+    }
+
+    // @@protoc_insertion_point(enum_scope:google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType)
+  }
+
+  public static final int ENCRYPTION_TYPE_FIELD_NUMBER = 1;
+  private int encryptionType_;
+  /**
+   *
+   *
+   * <pre>
+   * Required. The encryption type of the backup.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType encryption_type = 1 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   *
+   * @return The enum numeric value on the wire for encryptionType.
+   */
+  @java.lang.Override
+  public int getEncryptionTypeValue() {
+    return encryptionType_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The encryption type of the backup.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType encryption_type = 1 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   *
+   * @return The encryptionType.
+   */
+  @java.lang.Override
+  public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType
+      getEncryptionType() {
+    @SuppressWarnings("deprecation")
+    com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType result =
+        com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType.valueOf(
+            encryptionType_);
+    return result == null
+        ? com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType
+            .UNRECOGNIZED
+        : result;
+  }
+
+  public static final int KMS_KEY_NAME_FIELD_NUMBER = 2;
+  private volatile java.lang.Object kmsKeyName_;
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The Cloud KMS key that will be used to protect the backup.
+   * This field should be set only when
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+   * `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+   * `projects/&lt;project&gt;/locations/&lt;location&gt;/keyRings/&lt;key_ring&gt;/cryptoKeys/&lt;kms_key_name&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string kms_key_name = 2 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The kmsKeyName.
+   */
+  @java.lang.Override
+  public java.lang.String getKmsKeyName() {
+    java.lang.Object ref = kmsKeyName_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      kmsKeyName_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The Cloud KMS key that will be used to protect the backup.
+   * This field should be set only when
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+   * `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+   * `projects/&lt;project&gt;/locations/&lt;location&gt;/keyRings/&lt;key_ring&gt;/cryptoKeys/&lt;kms_key_name&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string kms_key_name = 2 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for kmsKeyName.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getKmsKeyNameBytes() {
+    java.lang.Object ref = kmsKeyName_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      kmsKeyName_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (encryptionType_
+        != com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType
+            .ENCRYPTION_TYPE_UNSPECIFIED
+            .getNumber()) {
+      output.writeEnum(1, encryptionType_);
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(kmsKeyName_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, kmsKeyName_);
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (encryptionType_
+        != com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType
+            .ENCRYPTION_TYPE_UNSPECIFIED
+            .getNumber()) {
+      size += com.google.protobuf.CodedOutputStream.computeEnumSize(1, encryptionType_);
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(kmsKeyName_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, kmsKeyName_);
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig)) {
+      return super.equals(obj);
+    }
+    com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig other =
+        (com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig) obj;
+
+    if (encryptionType_ != other.encryptionType_) return false;
+    if (!getKmsKeyName().equals(other.getKmsKeyName())) return false;
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + ENCRYPTION_TYPE_FIELD_NUMBER;
+    hash = (53 * hash) + encryptionType_;
+    hash = (37 * hash) + KMS_KEY_NAME_FIELD_NUMBER;
+    hash = (53 * hash) + getKmsKeyName().hashCode();
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      byte[] data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(
+      com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Encryption configuration for the copied backup.
+   * </pre>
+   *
+   * Protobuf type {@code google.spanner.admin.database.v1.CopyBackupEncryptionConfig}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.spanner.admin.database.v1.CopyBackupEncryptionConfig)
+      com.google.spanner.admin.database.v1.CopyBackupEncryptionConfigOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.spanner.admin.database.v1.BackupProto
+          .internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.spanner.admin.database.v1.BackupProto
+          .internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.class,
+              com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.Builder.class);
+    }
+
+    // Construct using com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      encryptionType_ = 0;
+
+      kmsKeyName_ = "";
+
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.spanner.admin.database.v1.BackupProto
+          .internal_static_google_spanner_admin_database_v1_CopyBackupEncryptionConfig_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig
+        getDefaultInstanceForType() {
+      return com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig build() {
+      com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig buildPartial() {
+      com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig result =
+          new com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig(this);
+      result.encryptionType_ = encryptionType_;
+      result.kmsKeyName_ = kmsKeyName_;
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig) {
+        return mergeFrom((com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(
+        com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig other) {
+      if (other
+          == com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.getDefaultInstance())
+        return this;
+      if (other.encryptionType_ != 0) {
+        setEncryptionTypeValue(other.getEncryptionTypeValue());
+      }
+      if (!other.getKmsKeyName().isEmpty()) {
+        kmsKeyName_ = other.kmsKeyName_;
+        onChanged();
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage =
+            (com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig)
+                e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private int encryptionType_ = 0;
+    /**
+     *
+     *
+     * <pre>
+     * Required. The encryption type of the backup.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType encryption_type = 1 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     *
+     * @return The enum numeric value on the wire for encryptionType.
+     */
+    @java.lang.Override
+    public int getEncryptionTypeValue() {
+      return encryptionType_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The encryption type of the backup.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType encryption_type = 1 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     *
+     * @param value The enum numeric value on the wire for encryptionType to set.
+     * @return This builder for chaining.
+     */
+    public Builder setEncryptionTypeValue(int value) {
+
+      encryptionType_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The encryption type of the backup.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType encryption_type = 1 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     *
+     * @return The encryptionType.
+     */
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType
+        getEncryptionType() {
+      @SuppressWarnings("deprecation")
+      com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType result =
+          com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType.valueOf(
+              encryptionType_);
+      return result == null
+          ? com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType
+              .UNRECOGNIZED
+          : result;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The encryption type of the backup.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType encryption_type = 1 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     *
+     * @param value The encryptionType to set.
+     * @return This builder for chaining.
+     */
+    public Builder setEncryptionType(
+        com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      encryptionType_ = value.getNumber();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The encryption type of the backup.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType encryption_type = 1 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearEncryptionType() {
+
+      encryptionType_ = 0;
+      onChanged();
+      return this;
+    }
+
+    private java.lang.Object kmsKeyName_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The Cloud KMS key that will be used to protect the backup.
+     * This field should be set only when
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+     * `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+     * `projects/&lt;project&gt;/locations/&lt;location&gt;/keyRings/&lt;key_ring&gt;/cryptoKeys/&lt;kms_key_name&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string kms_key_name = 2 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The kmsKeyName.
+     */
+    public java.lang.String getKmsKeyName() {
+      java.lang.Object ref = kmsKeyName_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        kmsKeyName_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The Cloud KMS key that will be used to protect the backup.
+     * This field should be set only when
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+     * `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+     * `projects/&lt;project&gt;/locations/&lt;location&gt;/keyRings/&lt;key_ring&gt;/cryptoKeys/&lt;kms_key_name&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string kms_key_name = 2 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The bytes for kmsKeyName.
+     */
+    public com.google.protobuf.ByteString getKmsKeyNameBytes() {
+      java.lang.Object ref = kmsKeyName_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        kmsKeyName_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The Cloud KMS key that will be used to protect the backup.
+     * This field should be set only when
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+     * `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+     * `projects/&lt;project&gt;/locations/&lt;location&gt;/keyRings/&lt;key_ring&gt;/cryptoKeys/&lt;kms_key_name&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string kms_key_name = 2 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The kmsKeyName to set.
+     * @return This builder for chaining.
+     */
+    public Builder setKmsKeyName(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      kmsKeyName_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The Cloud KMS key that will be used to protect the backup.
+     * This field should be set only when
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+     * `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+     * `projects/&lt;project&gt;/locations/&lt;location&gt;/keyRings/&lt;key_ring&gt;/cryptoKeys/&lt;kms_key_name&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string kms_key_name = 2 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearKmsKeyName() {
+
+      kmsKeyName_ = getDefaultInstance().getKmsKeyName();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The Cloud KMS key that will be used to protect the backup.
+     * This field should be set only when
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+     * `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+     * `projects/&lt;project&gt;/locations/&lt;location&gt;/keyRings/&lt;key_ring&gt;/cryptoKeys/&lt;kms_key_name&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string kms_key_name = 2 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The bytes for kmsKeyName to set.
+     * @return This builder for chaining.
+     */
+    public Builder setKmsKeyNameBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      kmsKeyName_ = value;
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.spanner.admin.database.v1.CopyBackupEncryptionConfig)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.spanner.admin.database.v1.CopyBackupEncryptionConfig)
+  private static final com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig
+      DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig();
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig
+      getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<CopyBackupEncryptionConfig> PARSER =
+      new com.google.protobuf.AbstractParser<CopyBackupEncryptionConfig>() {
+        @java.lang.Override
+        public CopyBackupEncryptionConfig parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new CopyBackupEncryptionConfig(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<CopyBackupEncryptionConfig> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<CopyBackupEncryptionConfig> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig
+      getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupEncryptionConfigOrBuilder.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupEncryptionConfigOrBuilder.java
new file mode 100644
index 00000000000..a6117dfb660
--- /dev/null
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupEncryptionConfigOrBuilder.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/spanner/admin/database/v1/backup.proto
+
+package com.google.spanner.admin.database.v1;
+
+public interface CopyBackupEncryptionConfigOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.spanner.admin.database.v1.CopyBackupEncryptionConfig)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The encryption type of the backup.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType encryption_type = 1 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   *
+   * @return The enum numeric value on the wire for encryptionType.
+   */
+  int getEncryptionTypeValue();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The encryption type of the backup.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType encryption_type = 1 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   *
+   * @return The encryptionType.
+   */
+  com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.EncryptionType
+      getEncryptionType();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The Cloud KMS key that will be used to protect the backup.
+   * This field should be set only when
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+   * `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+   * `projects/&lt;project&gt;/locations/&lt;location&gt;/keyRings/&lt;key_ring&gt;/cryptoKeys/&lt;kms_key_name&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string kms_key_name = 2 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The kmsKeyName.
+   */
+  java.lang.String getKmsKeyName();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The Cloud KMS key that will be used to protect the backup.
+   * This field should be set only when
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+   * `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+   * `projects/&lt;project&gt;/locations/&lt;location&gt;/keyRings/&lt;key_ring&gt;/cryptoKeys/&lt;kms_key_name&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string kms_key_name = 2 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for kmsKeyName.
+   */
+  com.google.protobuf.ByteString getKmsKeyNameBytes();
+}
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupMetadata.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupMetadata.java
new file mode 100644
index 00000000000..01e37326459
--- /dev/null
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupMetadata.java
@@ -0,0 +1,1541 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/spanner/admin/database/v1/backup.proto
+
+package com.google.spanner.admin.database.v1;
+
+/**
+ *
+ *
+ * <pre>
+ * Metadata type for the google.longrunning.Operation returned by
+ * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
+ * </pre>
+ *
+ * Protobuf type {@code google.spanner.admin.database.v1.CopyBackupMetadata}
+ */
+public final class CopyBackupMetadata extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.spanner.admin.database.v1.CopyBackupMetadata)
+    CopyBackupMetadataOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use CopyBackupMetadata.newBuilder() to construct.
+  private CopyBackupMetadata(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private CopyBackupMetadata() {
+    name_ = "";
+    sourceBackup_ = "";
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new CopyBackupMetadata();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private CopyBackupMetadata(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              name_ = s;
+              break;
+            }
+          case 18:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              sourceBackup_ = s;
+              break;
+            }
+          case 26:
+            {
+              com.google.spanner.admin.database.v1.OperationProgress.Builder subBuilder = null;
+              if (progress_ != null) {
+                subBuilder = progress_.toBuilder();
+              }
+              progress_ =
+                  input.readMessage(
+                      com.google.spanner.admin.database.v1.OperationProgress.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(progress_);
+                progress_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          case 34:
+            {
+              com.google.protobuf.Timestamp.Builder subBuilder = null;
+              if (cancelTime_ != null) {
+                subBuilder = cancelTime_.toBuilder();
+              }
+              cancelTime_ =
+                  input.readMessage(com.google.protobuf.Timestamp.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(cancelTime_);
+                cancelTime_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.spanner.admin.database.v1.BackupProto
+        .internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.spanner.admin.database.v1.BackupProto
+        .internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.spanner.admin.database.v1.CopyBackupMetadata.class,
+            com.google.spanner.admin.database.v1.CopyBackupMetadata.Builder.class);
+  }
+
+  public static final int NAME_FIELD_NUMBER = 1;
+  private volatile java.lang.Object name_;
+  /**
+   *
+   *
+   * <pre>
+   * The name of the backup being created through the copy operation.
+   * Values are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string name = 1 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The name.
+   */
+  @java.lang.Override
+  public java.lang.String getName() {
+    java.lang.Object ref = name_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      name_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The name of the backup being created through the copy operation.
+   * Values are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string name = 1 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The bytes for name.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getNameBytes() {
+    java.lang.Object ref = name_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      name_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int SOURCE_BACKUP_FIELD_NUMBER = 2;
+  private volatile java.lang.Object sourceBackup_;
+  /**
+   *
+   *
+   * <pre>
+   * The name of the source backup that is being copied.
+   * Values are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string source_backup = 2 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The sourceBackup.
+   */
+  @java.lang.Override
+  public java.lang.String getSourceBackup() {
+    java.lang.Object ref = sourceBackup_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      sourceBackup_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The name of the source backup that is being copied.
+   * Values are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string source_backup = 2 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The bytes for sourceBackup.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getSourceBackupBytes() {
+    java.lang.Object ref = sourceBackup_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      sourceBackup_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int PROGRESS_FIELD_NUMBER = 3;
+  private com.google.spanner.admin.database.v1.OperationProgress progress_;
+  /**
+   *
+   *
+   * <pre>
+   * The progress of the
+   * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+   * </pre>
+   *
+   * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+   *
+   * @return Whether the progress field is set.
+   */
+  @java.lang.Override
+  public boolean hasProgress() {
+    return progress_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The progress of the
+   * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+   * </pre>
+   *
+   * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+   *
+   * @return The progress.
+   */
+  @java.lang.Override
+  public com.google.spanner.admin.database.v1.OperationProgress getProgress() {
+    return progress_ == null
+        ? com.google.spanner.admin.database.v1.OperationProgress.getDefaultInstance()
+        : progress_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The progress of the
+   * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+   * </pre>
+   *
+   * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+   */
+  @java.lang.Override
+  public com.google.spanner.admin.database.v1.OperationProgressOrBuilder getProgressOrBuilder() {
+    return getProgress();
+  }
+
+  public static final int CANCEL_TIME_FIELD_NUMBER = 4;
+  private com.google.protobuf.Timestamp cancelTime_;
+  /**
+   *
+   *
+   * <pre>
+   * The time at which cancellation of CopyBackup operation was received.
+   * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+   * starts asynchronous cancellation on a long-running operation. The server
+   * makes a best effort to cancel the operation, but success is not guaranteed.
+   * Clients can use
+   * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+   * other methods to check whether the cancellation succeeded or whether the
+   * operation completed despite cancellation. On successful cancellation,
+   * the operation is not deleted; instead, it becomes an operation with
+   * an [Operation.error][google.longrunning.Operation.error] value with a
+   * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+   * corresponding to `Code.CANCELLED`.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+   *
+   * @return Whether the cancelTime field is set.
+   */
+  @java.lang.Override
+  public boolean hasCancelTime() {
+    return cancelTime_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The time at which cancellation of CopyBackup operation was received.
+   * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+   * starts asynchronous cancellation on a long-running operation. The server
+   * makes a best effort to cancel the operation, but success is not guaranteed.
+   * Clients can use
+   * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+   * other methods to check whether the cancellation succeeded or whether the
+   * operation completed despite cancellation. On successful cancellation,
+   * the operation is not deleted; instead, it becomes an operation with
+   * an [Operation.error][google.longrunning.Operation.error] value with a
+   * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+   * corresponding to `Code.CANCELLED`.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+   *
+   * @return The cancelTime.
+   */
+  @java.lang.Override
+  public com.google.protobuf.Timestamp getCancelTime() {
+    return cancelTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : cancelTime_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The time at which cancellation of CopyBackup operation was received.
+   * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+   * starts asynchronous cancellation on a long-running operation. The server
+   * makes a best effort to cancel the operation, but success is not guaranteed.
+   * Clients can use
+   * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+   * other methods to check whether the cancellation succeeded or whether the
+   * operation completed despite cancellation. On successful cancellation,
+   * the operation is not deleted; instead, it becomes an operation with
+   * an [Operation.error][google.longrunning.Operation.error] value with a
+   * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+   * corresponding to `Code.CANCELLED`.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+   */
+  @java.lang.Override
+  public com.google.protobuf.TimestampOrBuilder getCancelTimeOrBuilder() {
+    return getCancelTime();
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sourceBackup_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, sourceBackup_);
+    }
+    if (progress_ != null) {
+      output.writeMessage(3, getProgress());
+    }
+    if (cancelTime_ != null) {
+      output.writeMessage(4, getCancelTime());
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
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+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sourceBackup_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, sourceBackup_);
+    }
+    if (progress_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(3, getProgress());
+    }
+    if (cancelTime_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getCancelTime());
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.spanner.admin.database.v1.CopyBackupMetadata)) {
+      return super.equals(obj);
+    }
+    com.google.spanner.admin.database.v1.CopyBackupMetadata other =
+        (com.google.spanner.admin.database.v1.CopyBackupMetadata) obj;
+
+    if (!getName().equals(other.getName())) return false;
+    if (!getSourceBackup().equals(other.getSourceBackup())) return false;
+    if (hasProgress() != other.hasProgress()) return false;
+    if (hasProgress()) {
+      if (!getProgress().equals(other.getProgress())) return false;
+    }
+    if (hasCancelTime() != other.hasCancelTime()) return false;
+    if (hasCancelTime()) {
+      if (!getCancelTime().equals(other.getCancelTime())) return false;
+    }
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + NAME_FIELD_NUMBER;
+    hash = (53 * hash) + getName().hashCode();
+    hash = (37 * hash) + SOURCE_BACKUP_FIELD_NUMBER;
+    hash = (53 * hash) + getSourceBackup().hashCode();
+    if (hasProgress()) {
+      hash = (37 * hash) + PROGRESS_FIELD_NUMBER;
+      hash = (53 * hash) + getProgress().hashCode();
+    }
+    if (hasCancelTime()) {
+      hash = (37 * hash) + CANCEL_TIME_FIELD_NUMBER;
+      hash = (53 * hash) + getCancelTime().hashCode();
+    }
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(
+      com.google.spanner.admin.database.v1.CopyBackupMetadata prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Metadata type for the google.longrunning.Operation returned by
+   * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
+   * </pre>
+   *
+   * Protobuf type {@code google.spanner.admin.database.v1.CopyBackupMetadata}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.spanner.admin.database.v1.CopyBackupMetadata)
+      com.google.spanner.admin.database.v1.CopyBackupMetadataOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.spanner.admin.database.v1.BackupProto
+          .internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.spanner.admin.database.v1.BackupProto
+          .internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.spanner.admin.database.v1.CopyBackupMetadata.class,
+              com.google.spanner.admin.database.v1.CopyBackupMetadata.Builder.class);
+    }
+
+    // Construct using com.google.spanner.admin.database.v1.CopyBackupMetadata.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      name_ = "";
+
+      sourceBackup_ = "";
+
+      if (progressBuilder_ == null) {
+        progress_ = null;
+      } else {
+        progress_ = null;
+        progressBuilder_ = null;
+      }
+      if (cancelTimeBuilder_ == null) {
+        cancelTime_ = null;
+      } else {
+        cancelTime_ = null;
+        cancelTimeBuilder_ = null;
+      }
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.spanner.admin.database.v1.BackupProto
+          .internal_static_google_spanner_admin_database_v1_CopyBackupMetadata_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupMetadata getDefaultInstanceForType() {
+      return com.google.spanner.admin.database.v1.CopyBackupMetadata.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupMetadata build() {
+      com.google.spanner.admin.database.v1.CopyBackupMetadata result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupMetadata buildPartial() {
+      com.google.spanner.admin.database.v1.CopyBackupMetadata result =
+          new com.google.spanner.admin.database.v1.CopyBackupMetadata(this);
+      result.name_ = name_;
+      result.sourceBackup_ = sourceBackup_;
+      if (progressBuilder_ == null) {
+        result.progress_ = progress_;
+      } else {
+        result.progress_ = progressBuilder_.build();
+      }
+      if (cancelTimeBuilder_ == null) {
+        result.cancelTime_ = cancelTime_;
+      } else {
+        result.cancelTime_ = cancelTimeBuilder_.build();
+      }
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.spanner.admin.database.v1.CopyBackupMetadata) {
+        return mergeFrom((com.google.spanner.admin.database.v1.CopyBackupMetadata) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(com.google.spanner.admin.database.v1.CopyBackupMetadata other) {
+      if (other == com.google.spanner.admin.database.v1.CopyBackupMetadata.getDefaultInstance())
+        return this;
+      if (!other.getName().isEmpty()) {
+        name_ = other.name_;
+        onChanged();
+      }
+      if (!other.getSourceBackup().isEmpty()) {
+        sourceBackup_ = other.sourceBackup_;
+        onChanged();
+      }
+      if (other.hasProgress()) {
+        mergeProgress(other.getProgress());
+      }
+      if (other.hasCancelTime()) {
+        mergeCancelTime(other.getCancelTime());
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.spanner.admin.database.v1.CopyBackupMetadata parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage =
+            (com.google.spanner.admin.database.v1.CopyBackupMetadata) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private java.lang.Object name_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * The name of the backup being created through the copy operation.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string name = 1 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @return The name.
+     */
+    public java.lang.String getName() {
+      java.lang.Object ref = name_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        name_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The name of the backup being created through the copy operation.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string name = 1 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @return The bytes for name.
+     */
+    public com.google.protobuf.ByteString getNameBytes() {
+      java.lang.Object ref = name_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        name_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The name of the backup being created through the copy operation.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string name = 1 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @param value The name to set.
+     * @return This builder for chaining.
+     */
+    public Builder setName(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      name_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The name of the backup being created through the copy operation.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string name = 1 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearName() {
+
+      name_ = getDefaultInstance().getName();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The name of the backup being created through the copy operation.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string name = 1 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @param value The bytes for name to set.
+     * @return This builder for chaining.
+     */
+    public Builder setNameBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      name_ = value;
+      onChanged();
+      return this;
+    }
+
+    private java.lang.Object sourceBackup_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * The name of the source backup that is being copied.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string source_backup = 2 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @return The sourceBackup.
+     */
+    public java.lang.String getSourceBackup() {
+      java.lang.Object ref = sourceBackup_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        sourceBackup_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The name of the source backup that is being copied.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string source_backup = 2 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @return The bytes for sourceBackup.
+     */
+    public com.google.protobuf.ByteString getSourceBackupBytes() {
+      java.lang.Object ref = sourceBackup_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        sourceBackup_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The name of the source backup that is being copied.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string source_backup = 2 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @param value The sourceBackup to set.
+     * @return This builder for chaining.
+     */
+    public Builder setSourceBackup(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      sourceBackup_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The name of the source backup that is being copied.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string source_backup = 2 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearSourceBackup() {
+
+      sourceBackup_ = getDefaultInstance().getSourceBackup();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The name of the source backup that is being copied.
+     * Values are of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string source_backup = 2 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @param value The bytes for sourceBackup to set.
+     * @return This builder for chaining.
+     */
+    public Builder setSourceBackupBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      sourceBackup_ = value;
+      onChanged();
+      return this;
+    }
+
+    private com.google.spanner.admin.database.v1.OperationProgress progress_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.spanner.admin.database.v1.OperationProgress,
+            com.google.spanner.admin.database.v1.OperationProgress.Builder,
+            com.google.spanner.admin.database.v1.OperationProgressOrBuilder>
+        progressBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * The progress of the
+     * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+     * </pre>
+     *
+     * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+     *
+     * @return Whether the progress field is set.
+     */
+    public boolean hasProgress() {
+      return progressBuilder_ != null || progress_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The progress of the
+     * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+     * </pre>
+     *
+     * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+     *
+     * @return The progress.
+     */
+    public com.google.spanner.admin.database.v1.OperationProgress getProgress() {
+      if (progressBuilder_ == null) {
+        return progress_ == null
+            ? com.google.spanner.admin.database.v1.OperationProgress.getDefaultInstance()
+            : progress_;
+      } else {
+        return progressBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The progress of the
+     * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+     * </pre>
+     *
+     * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+     */
+    public Builder setProgress(com.google.spanner.admin.database.v1.OperationProgress value) {
+      if (progressBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        progress_ = value;
+        onChanged();
+      } else {
+        progressBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The progress of the
+     * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+     * </pre>
+     *
+     * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+     */
+    public Builder setProgress(
+        com.google.spanner.admin.database.v1.OperationProgress.Builder builderForValue) {
+      if (progressBuilder_ == null) {
+        progress_ = builderForValue.build();
+        onChanged();
+      } else {
+        progressBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The progress of the
+     * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+     * </pre>
+     *
+     * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+     */
+    public Builder mergeProgress(com.google.spanner.admin.database.v1.OperationProgress value) {
+      if (progressBuilder_ == null) {
+        if (progress_ != null) {
+          progress_ =
+              com.google.spanner.admin.database.v1.OperationProgress.newBuilder(progress_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          progress_ = value;
+        }
+        onChanged();
+      } else {
+        progressBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The progress of the
+     * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+     * </pre>
+     *
+     * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+     */
+    public Builder clearProgress() {
+      if (progressBuilder_ == null) {
+        progress_ = null;
+        onChanged();
+      } else {
+        progress_ = null;
+        progressBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The progress of the
+     * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+     * </pre>
+     *
+     * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+     */
+    public com.google.spanner.admin.database.v1.OperationProgress.Builder getProgressBuilder() {
+
+      onChanged();
+      return getProgressFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The progress of the
+     * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+     * </pre>
+     *
+     * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+     */
+    public com.google.spanner.admin.database.v1.OperationProgressOrBuilder getProgressOrBuilder() {
+      if (progressBuilder_ != null) {
+        return progressBuilder_.getMessageOrBuilder();
+      } else {
+        return progress_ == null
+            ? com.google.spanner.admin.database.v1.OperationProgress.getDefaultInstance()
+            : progress_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The progress of the
+     * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+     * </pre>
+     *
+     * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.spanner.admin.database.v1.OperationProgress,
+            com.google.spanner.admin.database.v1.OperationProgress.Builder,
+            com.google.spanner.admin.database.v1.OperationProgressOrBuilder>
+        getProgressFieldBuilder() {
+      if (progressBuilder_ == null) {
+        progressBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.spanner.admin.database.v1.OperationProgress,
+                com.google.spanner.admin.database.v1.OperationProgress.Builder,
+                com.google.spanner.admin.database.v1.OperationProgressOrBuilder>(
+                getProgress(), getParentForChildren(), isClean());
+        progress_ = null;
+      }
+      return progressBuilder_;
+    }
+
+    private com.google.protobuf.Timestamp cancelTime_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Timestamp,
+            com.google.protobuf.Timestamp.Builder,
+            com.google.protobuf.TimestampOrBuilder>
+        cancelTimeBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * The time at which cancellation of CopyBackup operation was received.
+     * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+     * starts asynchronous cancellation on a long-running operation. The server
+     * makes a best effort to cancel the operation, but success is not guaranteed.
+     * Clients can use
+     * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+     * other methods to check whether the cancellation succeeded or whether the
+     * operation completed despite cancellation. On successful cancellation,
+     * the operation is not deleted; instead, it becomes an operation with
+     * an [Operation.error][google.longrunning.Operation.error] value with a
+     * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+     * corresponding to `Code.CANCELLED`.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+     *
+     * @return Whether the cancelTime field is set.
+     */
+    public boolean hasCancelTime() {
+      return cancelTimeBuilder_ != null || cancelTime_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The time at which cancellation of CopyBackup operation was received.
+     * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+     * starts asynchronous cancellation on a long-running operation. The server
+     * makes a best effort to cancel the operation, but success is not guaranteed.
+     * Clients can use
+     * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+     * other methods to check whether the cancellation succeeded or whether the
+     * operation completed despite cancellation. On successful cancellation,
+     * the operation is not deleted; instead, it becomes an operation with
+     * an [Operation.error][google.longrunning.Operation.error] value with a
+     * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+     * corresponding to `Code.CANCELLED`.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+     *
+     * @return The cancelTime.
+     */
+    public com.google.protobuf.Timestamp getCancelTime() {
+      if (cancelTimeBuilder_ == null) {
+        return cancelTime_ == null
+            ? com.google.protobuf.Timestamp.getDefaultInstance()
+            : cancelTime_;
+      } else {
+        return cancelTimeBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The time at which cancellation of CopyBackup operation was received.
+     * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+     * starts asynchronous cancellation on a long-running operation. The server
+     * makes a best effort to cancel the operation, but success is not guaranteed.
+     * Clients can use
+     * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+     * other methods to check whether the cancellation succeeded or whether the
+     * operation completed despite cancellation. On successful cancellation,
+     * the operation is not deleted; instead, it becomes an operation with
+     * an [Operation.error][google.longrunning.Operation.error] value with a
+     * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+     * corresponding to `Code.CANCELLED`.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+     */
+    public Builder setCancelTime(com.google.protobuf.Timestamp value) {
+      if (cancelTimeBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        cancelTime_ = value;
+        onChanged();
+      } else {
+        cancelTimeBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The time at which cancellation of CopyBackup operation was received.
+     * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+     * starts asynchronous cancellation on a long-running operation. The server
+     * makes a best effort to cancel the operation, but success is not guaranteed.
+     * Clients can use
+     * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+     * other methods to check whether the cancellation succeeded or whether the
+     * operation completed despite cancellation. On successful cancellation,
+     * the operation is not deleted; instead, it becomes an operation with
+     * an [Operation.error][google.longrunning.Operation.error] value with a
+     * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+     * corresponding to `Code.CANCELLED`.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+     */
+    public Builder setCancelTime(com.google.protobuf.Timestamp.Builder builderForValue) {
+      if (cancelTimeBuilder_ == null) {
+        cancelTime_ = builderForValue.build();
+        onChanged();
+      } else {
+        cancelTimeBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The time at which cancellation of CopyBackup operation was received.
+     * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+     * starts asynchronous cancellation on a long-running operation. The server
+     * makes a best effort to cancel the operation, but success is not guaranteed.
+     * Clients can use
+     * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+     * other methods to check whether the cancellation succeeded or whether the
+     * operation completed despite cancellation. On successful cancellation,
+     * the operation is not deleted; instead, it becomes an operation with
+     * an [Operation.error][google.longrunning.Operation.error] value with a
+     * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+     * corresponding to `Code.CANCELLED`.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+     */
+    public Builder mergeCancelTime(com.google.protobuf.Timestamp value) {
+      if (cancelTimeBuilder_ == null) {
+        if (cancelTime_ != null) {
+          cancelTime_ =
+              com.google.protobuf.Timestamp.newBuilder(cancelTime_).mergeFrom(value).buildPartial();
+        } else {
+          cancelTime_ = value;
+        }
+        onChanged();
+      } else {
+        cancelTimeBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The time at which cancellation of CopyBackup operation was received.
+     * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+     * starts asynchronous cancellation on a long-running operation. The server
+     * makes a best effort to cancel the operation, but success is not guaranteed.
+     * Clients can use
+     * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+     * other methods to check whether the cancellation succeeded or whether the
+     * operation completed despite cancellation. On successful cancellation,
+     * the operation is not deleted; instead, it becomes an operation with
+     * an [Operation.error][google.longrunning.Operation.error] value with a
+     * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+     * corresponding to `Code.CANCELLED`.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+     */
+    public Builder clearCancelTime() {
+      if (cancelTimeBuilder_ == null) {
+        cancelTime_ = null;
+        onChanged();
+      } else {
+        cancelTime_ = null;
+        cancelTimeBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The time at which cancellation of CopyBackup operation was received.
+     * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+     * starts asynchronous cancellation on a long-running operation. The server
+     * makes a best effort to cancel the operation, but success is not guaranteed.
+     * Clients can use
+     * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+     * other methods to check whether the cancellation succeeded or whether the
+     * operation completed despite cancellation. On successful cancellation,
+     * the operation is not deleted; instead, it becomes an operation with
+     * an [Operation.error][google.longrunning.Operation.error] value with a
+     * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+     * corresponding to `Code.CANCELLED`.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+     */
+    public com.google.protobuf.Timestamp.Builder getCancelTimeBuilder() {
+
+      onChanged();
+      return getCancelTimeFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The time at which cancellation of CopyBackup operation was received.
+     * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+     * starts asynchronous cancellation on a long-running operation. The server
+     * makes a best effort to cancel the operation, but success is not guaranteed.
+     * Clients can use
+     * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+     * other methods to check whether the cancellation succeeded or whether the
+     * operation completed despite cancellation. On successful cancellation,
+     * the operation is not deleted; instead, it becomes an operation with
+     * an [Operation.error][google.longrunning.Operation.error] value with a
+     * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+     * corresponding to `Code.CANCELLED`.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+     */
+    public com.google.protobuf.TimestampOrBuilder getCancelTimeOrBuilder() {
+      if (cancelTimeBuilder_ != null) {
+        return cancelTimeBuilder_.getMessageOrBuilder();
+      } else {
+        return cancelTime_ == null
+            ? com.google.protobuf.Timestamp.getDefaultInstance()
+            : cancelTime_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The time at which cancellation of CopyBackup operation was received.
+     * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+     * starts asynchronous cancellation on a long-running operation. The server
+     * makes a best effort to cancel the operation, but success is not guaranteed.
+     * Clients can use
+     * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+     * other methods to check whether the cancellation succeeded or whether the
+     * operation completed despite cancellation. On successful cancellation,
+     * the operation is not deleted; instead, it becomes an operation with
+     * an [Operation.error][google.longrunning.Operation.error] value with a
+     * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+     * corresponding to `Code.CANCELLED`.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Timestamp,
+            com.google.protobuf.Timestamp.Builder,
+            com.google.protobuf.TimestampOrBuilder>
+        getCancelTimeFieldBuilder() {
+      if (cancelTimeBuilder_ == null) {
+        cancelTimeBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.protobuf.Timestamp,
+                com.google.protobuf.Timestamp.Builder,
+                com.google.protobuf.TimestampOrBuilder>(
+                getCancelTime(), getParentForChildren(), isClean());
+        cancelTime_ = null;
+      }
+      return cancelTimeBuilder_;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.spanner.admin.database.v1.CopyBackupMetadata)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.spanner.admin.database.v1.CopyBackupMetadata)
+  private static final com.google.spanner.admin.database.v1.CopyBackupMetadata DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.spanner.admin.database.v1.CopyBackupMetadata();
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupMetadata getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<CopyBackupMetadata> PARSER =
+      new com.google.protobuf.AbstractParser<CopyBackupMetadata>() {
+        @java.lang.Override
+        public CopyBackupMetadata parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new CopyBackupMetadata(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<CopyBackupMetadata> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<CopyBackupMetadata> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.spanner.admin.database.v1.CopyBackupMetadata getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupMetadataOrBuilder.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupMetadataOrBuilder.java
new file mode 100644
index 00000000000..f977fe6fb38
--- /dev/null
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupMetadataOrBuilder.java
@@ -0,0 +1,189 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/spanner/admin/database/v1/backup.proto
+
+package com.google.spanner.admin.database.v1;
+
+public interface CopyBackupMetadataOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.spanner.admin.database.v1.CopyBackupMetadata)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * The name of the backup being created through the copy operation.
+   * Values are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string name = 1 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The name.
+   */
+  java.lang.String getName();
+  /**
+   *
+   *
+   * <pre>
+   * The name of the backup being created through the copy operation.
+   * Values are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string name = 1 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The bytes for name.
+   */
+  com.google.protobuf.ByteString getNameBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * The name of the source backup that is being copied.
+   * Values are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string source_backup = 2 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The sourceBackup.
+   */
+  java.lang.String getSourceBackup();
+  /**
+   *
+   *
+   * <pre>
+   * The name of the source backup that is being copied.
+   * Values are of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string source_backup = 2 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The bytes for sourceBackup.
+   */
+  com.google.protobuf.ByteString getSourceBackupBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * The progress of the
+   * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+   * </pre>
+   *
+   * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+   *
+   * @return Whether the progress field is set.
+   */
+  boolean hasProgress();
+  /**
+   *
+   *
+   * <pre>
+   * The progress of the
+   * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+   * </pre>
+   *
+   * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+   *
+   * @return The progress.
+   */
+  com.google.spanner.admin.database.v1.OperationProgress getProgress();
+  /**
+   *
+   *
+   * <pre>
+   * The progress of the
+   * [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+   * </pre>
+   *
+   * <code>.google.spanner.admin.database.v1.OperationProgress progress = 3;</code>
+   */
+  com.google.spanner.admin.database.v1.OperationProgressOrBuilder getProgressOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * The time at which cancellation of CopyBackup operation was received.
+   * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+   * starts asynchronous cancellation on a long-running operation. The server
+   * makes a best effort to cancel the operation, but success is not guaranteed.
+   * Clients can use
+   * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+   * other methods to check whether the cancellation succeeded or whether the
+   * operation completed despite cancellation. On successful cancellation,
+   * the operation is not deleted; instead, it becomes an operation with
+   * an [Operation.error][google.longrunning.Operation.error] value with a
+   * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+   * corresponding to `Code.CANCELLED`.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+   *
+   * @return Whether the cancelTime field is set.
+   */
+  boolean hasCancelTime();
+  /**
+   *
+   *
+   * <pre>
+   * The time at which cancellation of CopyBackup operation was received.
+   * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+   * starts asynchronous cancellation on a long-running operation. The server
+   * makes a best effort to cancel the operation, but success is not guaranteed.
+   * Clients can use
+   * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+   * other methods to check whether the cancellation succeeded or whether the
+   * operation completed despite cancellation. On successful cancellation,
+   * the operation is not deleted; instead, it becomes an operation with
+   * an [Operation.error][google.longrunning.Operation.error] value with a
+   * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+   * corresponding to `Code.CANCELLED`.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+   *
+   * @return The cancelTime.
+   */
+  com.google.protobuf.Timestamp getCancelTime();
+  /**
+   *
+   *
+   * <pre>
+   * The time at which cancellation of CopyBackup operation was received.
+   * [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+   * starts asynchronous cancellation on a long-running operation. The server
+   * makes a best effort to cancel the operation, but success is not guaranteed.
+   * Clients can use
+   * [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+   * other methods to check whether the cancellation succeeded or whether the
+   * operation completed despite cancellation. On successful cancellation,
+   * the operation is not deleted; instead, it becomes an operation with
+   * an [Operation.error][google.longrunning.Operation.error] value with a
+   * [google.rpc.Status.code][google.rpc.Status.code] of 1,
+   * corresponding to `Code.CANCELLED`.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp cancel_time = 4;</code>
+   */
+  com.google.protobuf.TimestampOrBuilder getCancelTimeOrBuilder();
+}
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupRequest.java
new file mode 100644
index 00000000000..3e5aa64bae9
--- /dev/null
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupRequest.java
@@ -0,0 +1,1769 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/spanner/admin/database/v1/backup.proto
+
+package com.google.spanner.admin.database.v1;
+
+/**
+ *
+ *
+ * <pre>
+ * The request for [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
+ * </pre>
+ *
+ * Protobuf type {@code google.spanner.admin.database.v1.CopyBackupRequest}
+ */
+public final class CopyBackupRequest extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.spanner.admin.database.v1.CopyBackupRequest)
+    CopyBackupRequestOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use CopyBackupRequest.newBuilder() to construct.
+  private CopyBackupRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private CopyBackupRequest() {
+    parent_ = "";
+    backupId_ = "";
+    sourceBackup_ = "";
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new CopyBackupRequest();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private CopyBackupRequest(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              parent_ = s;
+              break;
+            }
+          case 18:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              backupId_ = s;
+              break;
+            }
+          case 26:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              sourceBackup_ = s;
+              break;
+            }
+          case 34:
+            {
+              com.google.protobuf.Timestamp.Builder subBuilder = null;
+              if (expireTime_ != null) {
+                subBuilder = expireTime_.toBuilder();
+              }
+              expireTime_ =
+                  input.readMessage(com.google.protobuf.Timestamp.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(expireTime_);
+                expireTime_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          case 42:
+            {
+              com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.Builder subBuilder =
+                  null;
+              if (encryptionConfig_ != null) {
+                subBuilder = encryptionConfig_.toBuilder();
+              }
+              encryptionConfig_ =
+                  input.readMessage(
+                      com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(encryptionConfig_);
+                encryptionConfig_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.spanner.admin.database.v1.BackupProto
+        .internal_static_google_spanner_admin_database_v1_CopyBackupRequest_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.spanner.admin.database.v1.BackupProto
+        .internal_static_google_spanner_admin_database_v1_CopyBackupRequest_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.spanner.admin.database.v1.CopyBackupRequest.class,
+            com.google.spanner.admin.database.v1.CopyBackupRequest.Builder.class);
+  }
+
+  public static final int PARENT_FIELD_NUMBER = 1;
+  private volatile java.lang.Object parent_;
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the destination instance that will contain the backup copy.
+   * Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The parent.
+   */
+  @java.lang.Override
+  public java.lang.String getParent() {
+    java.lang.Object ref = parent_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      parent_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the destination instance that will contain the backup copy.
+   * Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for parent.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getParentBytes() {
+    java.lang.Object ref = parent_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      parent_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int BACKUP_ID_FIELD_NUMBER = 2;
+  private volatile java.lang.Object backupId_;
+  /**
+   *
+   *
+   * <pre>
+   * Required. The id of the backup copy.
+   * The `backup_id` appended to `parent` forms the full backup_uri of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string backup_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The backupId.
+   */
+  @java.lang.Override
+  public java.lang.String getBackupId() {
+    java.lang.Object ref = backupId_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      backupId_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The id of the backup copy.
+   * The `backup_id` appended to `parent` forms the full backup_uri of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string backup_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The bytes for backupId.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getBackupIdBytes() {
+    java.lang.Object ref = backupId_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      backupId_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int SOURCE_BACKUP_FIELD_NUMBER = 3;
+  private volatile java.lang.Object sourceBackup_;
+  /**
+   *
+   *
+   * <pre>
+   * Required. The source backup to be copied.
+   * The source backup needs to be in READY state for it to be copied.
+   * Once CopyBackup is in progress, the source backup cannot be deleted or
+   * cleaned up on expiration until CopyBackup is finished.
+   * Values are of the form:
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string source_backup = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The sourceBackup.
+   */
+  @java.lang.Override
+  public java.lang.String getSourceBackup() {
+    java.lang.Object ref = sourceBackup_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      sourceBackup_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The source backup to be copied.
+   * The source backup needs to be in READY state for it to be copied.
+   * Once CopyBackup is in progress, the source backup cannot be deleted or
+   * cleaned up on expiration until CopyBackup is finished.
+   * Values are of the form:
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string source_backup = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for sourceBackup.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getSourceBackupBytes() {
+    java.lang.Object ref = sourceBackup_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      sourceBackup_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int EXPIRE_TIME_FIELD_NUMBER = 4;
+  private com.google.protobuf.Timestamp expireTime_;
+  /**
+   *
+   *
+   * <pre>
+   * Required. The expiration time of the backup in microsecond granularity.
+   * The expiration time must be at least 6 hours and at most 366 days
+   * from the `create_time` of the source backup. Once the `expire_time` has
+   * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+   * to free the resources used by the backup.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   *
+   * @return Whether the expireTime field is set.
+   */
+  @java.lang.Override
+  public boolean hasExpireTime() {
+    return expireTime_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The expiration time of the backup in microsecond granularity.
+   * The expiration time must be at least 6 hours and at most 366 days
+   * from the `create_time` of the source backup. Once the `expire_time` has
+   * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+   * to free the resources used by the backup.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   *
+   * @return The expireTime.
+   */
+  @java.lang.Override
+  public com.google.protobuf.Timestamp getExpireTime() {
+    return expireTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : expireTime_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The expiration time of the backup in microsecond granularity.
+   * The expiration time must be at least 6 hours and at most 366 days
+   * from the `create_time` of the source backup. Once the `expire_time` has
+   * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+   * to free the resources used by the backup.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.protobuf.TimestampOrBuilder getExpireTimeOrBuilder() {
+    return getExpireTime();
+  }
+
+  public static final int ENCRYPTION_CONFIG_FIELD_NUMBER = 5;
+  private com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryptionConfig_;
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The encryption configuration used to encrypt the backup. If this field is
+   * not specified, the backup will use the same
+   * encryption configuration as the source backup by default, namely
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+   * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   *
+   * @return Whether the encryptionConfig field is set.
+   */
+  @java.lang.Override
+  public boolean hasEncryptionConfig() {
+    return encryptionConfig_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The encryption configuration used to encrypt the backup. If this field is
+   * not specified, the backup will use the same
+   * encryption configuration as the source backup by default, namely
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+   * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   *
+   * @return The encryptionConfig.
+   */
+  @java.lang.Override
+  public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig getEncryptionConfig() {
+    return encryptionConfig_ == null
+        ? com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.getDefaultInstance()
+        : encryptionConfig_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The encryption configuration used to encrypt the backup. If this field is
+   * not specified, the backup will use the same
+   * encryption configuration as the source backup by default, namely
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+   * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfigOrBuilder
+      getEncryptionConfigOrBuilder() {
+    return getEncryptionConfig();
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, parent_);
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(backupId_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, backupId_);
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sourceBackup_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 3, sourceBackup_);
+    }
+    if (expireTime_ != null) {
+      output.writeMessage(4, getExpireTime());
+    }
+    if (encryptionConfig_ != null) {
+      output.writeMessage(5, getEncryptionConfig());
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, parent_);
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(backupId_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, backupId_);
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sourceBackup_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, sourceBackup_);
+    }
+    if (expireTime_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getExpireTime());
+    }
+    if (encryptionConfig_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(5, getEncryptionConfig());
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.spanner.admin.database.v1.CopyBackupRequest)) {
+      return super.equals(obj);
+    }
+    com.google.spanner.admin.database.v1.CopyBackupRequest other =
+        (com.google.spanner.admin.database.v1.CopyBackupRequest) obj;
+
+    if (!getParent().equals(other.getParent())) return false;
+    if (!getBackupId().equals(other.getBackupId())) return false;
+    if (!getSourceBackup().equals(other.getSourceBackup())) return false;
+    if (hasExpireTime() != other.hasExpireTime()) return false;
+    if (hasExpireTime()) {
+      if (!getExpireTime().equals(other.getExpireTime())) return false;
+    }
+    if (hasEncryptionConfig() != other.hasEncryptionConfig()) return false;
+    if (hasEncryptionConfig()) {
+      if (!getEncryptionConfig().equals(other.getEncryptionConfig())) return false;
+    }
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + PARENT_FIELD_NUMBER;
+    hash = (53 * hash) + getParent().hashCode();
+    hash = (37 * hash) + BACKUP_ID_FIELD_NUMBER;
+    hash = (53 * hash) + getBackupId().hashCode();
+    hash = (37 * hash) + SOURCE_BACKUP_FIELD_NUMBER;
+    hash = (53 * hash) + getSourceBackup().hashCode();
+    if (hasExpireTime()) {
+      hash = (37 * hash) + EXPIRE_TIME_FIELD_NUMBER;
+      hash = (53 * hash) + getExpireTime().hashCode();
+    }
+    if (hasEncryptionConfig()) {
+      hash = (37 * hash) + ENCRYPTION_CONFIG_FIELD_NUMBER;
+      hash = (53 * hash) + getEncryptionConfig().hashCode();
+    }
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(
+      com.google.spanner.admin.database.v1.CopyBackupRequest prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The request for [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
+   * </pre>
+   *
+   * Protobuf type {@code google.spanner.admin.database.v1.CopyBackupRequest}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.spanner.admin.database.v1.CopyBackupRequest)
+      com.google.spanner.admin.database.v1.CopyBackupRequestOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.spanner.admin.database.v1.BackupProto
+          .internal_static_google_spanner_admin_database_v1_CopyBackupRequest_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.spanner.admin.database.v1.BackupProto
+          .internal_static_google_spanner_admin_database_v1_CopyBackupRequest_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.spanner.admin.database.v1.CopyBackupRequest.class,
+              com.google.spanner.admin.database.v1.CopyBackupRequest.Builder.class);
+    }
+
+    // Construct using com.google.spanner.admin.database.v1.CopyBackupRequest.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      parent_ = "";
+
+      backupId_ = "";
+
+      sourceBackup_ = "";
+
+      if (expireTimeBuilder_ == null) {
+        expireTime_ = null;
+      } else {
+        expireTime_ = null;
+        expireTimeBuilder_ = null;
+      }
+      if (encryptionConfigBuilder_ == null) {
+        encryptionConfig_ = null;
+      } else {
+        encryptionConfig_ = null;
+        encryptionConfigBuilder_ = null;
+      }
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.spanner.admin.database.v1.BackupProto
+          .internal_static_google_spanner_admin_database_v1_CopyBackupRequest_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupRequest getDefaultInstanceForType() {
+      return com.google.spanner.admin.database.v1.CopyBackupRequest.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupRequest build() {
+      com.google.spanner.admin.database.v1.CopyBackupRequest result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.spanner.admin.database.v1.CopyBackupRequest buildPartial() {
+      com.google.spanner.admin.database.v1.CopyBackupRequest result =
+          new com.google.spanner.admin.database.v1.CopyBackupRequest(this);
+      result.parent_ = parent_;
+      result.backupId_ = backupId_;
+      result.sourceBackup_ = sourceBackup_;
+      if (expireTimeBuilder_ == null) {
+        result.expireTime_ = expireTime_;
+      } else {
+        result.expireTime_ = expireTimeBuilder_.build();
+      }
+      if (encryptionConfigBuilder_ == null) {
+        result.encryptionConfig_ = encryptionConfig_;
+      } else {
+        result.encryptionConfig_ = encryptionConfigBuilder_.build();
+      }
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.spanner.admin.database.v1.CopyBackupRequest) {
+        return mergeFrom((com.google.spanner.admin.database.v1.CopyBackupRequest) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(com.google.spanner.admin.database.v1.CopyBackupRequest other) {
+      if (other == com.google.spanner.admin.database.v1.CopyBackupRequest.getDefaultInstance())
+        return this;
+      if (!other.getParent().isEmpty()) {
+        parent_ = other.parent_;
+        onChanged();
+      }
+      if (!other.getBackupId().isEmpty()) {
+        backupId_ = other.backupId_;
+        onChanged();
+      }
+      if (!other.getSourceBackup().isEmpty()) {
+        sourceBackup_ = other.sourceBackup_;
+        onChanged();
+      }
+      if (other.hasExpireTime()) {
+        mergeExpireTime(other.getExpireTime());
+      }
+      if (other.hasEncryptionConfig()) {
+        mergeEncryptionConfig(other.getEncryptionConfig());
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.spanner.admin.database.v1.CopyBackupRequest parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage =
+            (com.google.spanner.admin.database.v1.CopyBackupRequest) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private java.lang.Object parent_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the destination instance that will contain the backup copy.
+     * Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The parent.
+     */
+    public java.lang.String getParent() {
+      java.lang.Object ref = parent_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        parent_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the destination instance that will contain the backup copy.
+     * Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The bytes for parent.
+     */
+    public com.google.protobuf.ByteString getParentBytes() {
+      java.lang.Object ref = parent_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        parent_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the destination instance that will contain the backup copy.
+     * Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The parent to set.
+     * @return This builder for chaining.
+     */
+    public Builder setParent(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      parent_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the destination instance that will contain the backup copy.
+     * Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearParent() {
+
+      parent_ = getDefaultInstance().getParent();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the destination instance that will contain the backup copy.
+     * Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The bytes for parent to set.
+     * @return This builder for chaining.
+     */
+    public Builder setParentBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      parent_ = value;
+      onChanged();
+      return this;
+    }
+
+    private java.lang.Object backupId_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Required. The id of the backup copy.
+     * The `backup_id` appended to `parent` forms the full backup_uri of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string backup_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return The backupId.
+     */
+    public java.lang.String getBackupId() {
+      java.lang.Object ref = backupId_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        backupId_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The id of the backup copy.
+     * The `backup_id` appended to `parent` forms the full backup_uri of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string backup_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return The bytes for backupId.
+     */
+    public com.google.protobuf.ByteString getBackupIdBytes() {
+      java.lang.Object ref = backupId_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        backupId_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The id of the backup copy.
+     * The `backup_id` appended to `parent` forms the full backup_uri of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string backup_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @param value The backupId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setBackupId(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      backupId_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The id of the backup copy.
+     * The `backup_id` appended to `parent` forms the full backup_uri of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string backup_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearBackupId() {
+
+      backupId_ = getDefaultInstance().getBackupId();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The id of the backup copy.
+     * The `backup_id` appended to `parent` forms the full backup_uri of the form
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>string backup_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+     *
+     * @param value The bytes for backupId to set.
+     * @return This builder for chaining.
+     */
+    public Builder setBackupIdBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      backupId_ = value;
+      onChanged();
+      return this;
+    }
+
+    private java.lang.Object sourceBackup_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Required. The source backup to be copied.
+     * The source backup needs to be in READY state for it to be copied.
+     * Once CopyBackup is in progress, the source backup cannot be deleted or
+     * cleaned up on expiration until CopyBackup is finished.
+     * Values are of the form:
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string source_backup = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The sourceBackup.
+     */
+    public java.lang.String getSourceBackup() {
+      java.lang.Object ref = sourceBackup_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        sourceBackup_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The source backup to be copied.
+     * The source backup needs to be in READY state for it to be copied.
+     * Once CopyBackup is in progress, the source backup cannot be deleted or
+     * cleaned up on expiration until CopyBackup is finished.
+     * Values are of the form:
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string source_backup = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The bytes for sourceBackup.
+     */
+    public com.google.protobuf.ByteString getSourceBackupBytes() {
+      java.lang.Object ref = sourceBackup_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        sourceBackup_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The source backup to be copied.
+     * The source backup needs to be in READY state for it to be copied.
+     * Once CopyBackup is in progress, the source backup cannot be deleted or
+     * cleaned up on expiration until CopyBackup is finished.
+     * Values are of the form:
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string source_backup = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The sourceBackup to set.
+     * @return This builder for chaining.
+     */
+    public Builder setSourceBackup(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      sourceBackup_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The source backup to be copied.
+     * The source backup needs to be in READY state for it to be copied.
+     * Once CopyBackup is in progress, the source backup cannot be deleted or
+     * cleaned up on expiration until CopyBackup is finished.
+     * Values are of the form:
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string source_backup = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearSourceBackup() {
+
+      sourceBackup_ = getDefaultInstance().getSourceBackup();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The source backup to be copied.
+     * The source backup needs to be in READY state for it to be copied.
+     * Once CopyBackup is in progress, the source backup cannot be deleted or
+     * cleaned up on expiration until CopyBackup is finished.
+     * Values are of the form:
+     * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string source_backup = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The bytes for sourceBackup to set.
+     * @return This builder for chaining.
+     */
+    public Builder setSourceBackupBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      sourceBackup_ = value;
+      onChanged();
+      return this;
+    }
+
+    private com.google.protobuf.Timestamp expireTime_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Timestamp,
+            com.google.protobuf.Timestamp.Builder,
+            com.google.protobuf.TimestampOrBuilder>
+        expireTimeBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Required. The expiration time of the backup in microsecond granularity.
+     * The expiration time must be at least 6 hours and at most 366 days
+     * from the `create_time` of the source backup. Once the `expire_time` has
+     * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+     * to free the resources used by the backup.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     *
+     * @return Whether the expireTime field is set.
+     */
+    public boolean hasExpireTime() {
+      return expireTimeBuilder_ != null || expireTime_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The expiration time of the backup in microsecond granularity.
+     * The expiration time must be at least 6 hours and at most 366 days
+     * from the `create_time` of the source backup. Once the `expire_time` has
+     * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+     * to free the resources used by the backup.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     *
+     * @return The expireTime.
+     */
+    public com.google.protobuf.Timestamp getExpireTime() {
+      if (expireTimeBuilder_ == null) {
+        return expireTime_ == null
+            ? com.google.protobuf.Timestamp.getDefaultInstance()
+            : expireTime_;
+      } else {
+        return expireTimeBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The expiration time of the backup in microsecond granularity.
+     * The expiration time must be at least 6 hours and at most 366 days
+     * from the `create_time` of the source backup. Once the `expire_time` has
+     * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+     * to free the resources used by the backup.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     */
+    public Builder setExpireTime(com.google.protobuf.Timestamp value) {
+      if (expireTimeBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        expireTime_ = value;
+        onChanged();
+      } else {
+        expireTimeBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The expiration time of the backup in microsecond granularity.
+     * The expiration time must be at least 6 hours and at most 366 days
+     * from the `create_time` of the source backup. Once the `expire_time` has
+     * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+     * to free the resources used by the backup.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     */
+    public Builder setExpireTime(com.google.protobuf.Timestamp.Builder builderForValue) {
+      if (expireTimeBuilder_ == null) {
+        expireTime_ = builderForValue.build();
+        onChanged();
+      } else {
+        expireTimeBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The expiration time of the backup in microsecond granularity.
+     * The expiration time must be at least 6 hours and at most 366 days
+     * from the `create_time` of the source backup. Once the `expire_time` has
+     * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+     * to free the resources used by the backup.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     */
+    public Builder mergeExpireTime(com.google.protobuf.Timestamp value) {
+      if (expireTimeBuilder_ == null) {
+        if (expireTime_ != null) {
+          expireTime_ =
+              com.google.protobuf.Timestamp.newBuilder(expireTime_).mergeFrom(value).buildPartial();
+        } else {
+          expireTime_ = value;
+        }
+        onChanged();
+      } else {
+        expireTimeBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The expiration time of the backup in microsecond granularity.
+     * The expiration time must be at least 6 hours and at most 366 days
+     * from the `create_time` of the source backup. Once the `expire_time` has
+     * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+     * to free the resources used by the backup.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     */
+    public Builder clearExpireTime() {
+      if (expireTimeBuilder_ == null) {
+        expireTime_ = null;
+        onChanged();
+      } else {
+        expireTime_ = null;
+        expireTimeBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The expiration time of the backup in microsecond granularity.
+     * The expiration time must be at least 6 hours and at most 366 days
+     * from the `create_time` of the source backup. Once the `expire_time` has
+     * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+     * to free the resources used by the backup.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     */
+    public com.google.protobuf.Timestamp.Builder getExpireTimeBuilder() {
+
+      onChanged();
+      return getExpireTimeFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The expiration time of the backup in microsecond granularity.
+     * The expiration time must be at least 6 hours and at most 366 days
+     * from the `create_time` of the source backup. Once the `expire_time` has
+     * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+     * to free the resources used by the backup.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     */
+    public com.google.protobuf.TimestampOrBuilder getExpireTimeOrBuilder() {
+      if (expireTimeBuilder_ != null) {
+        return expireTimeBuilder_.getMessageOrBuilder();
+      } else {
+        return expireTime_ == null
+            ? com.google.protobuf.Timestamp.getDefaultInstance()
+            : expireTime_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The expiration time of the backup in microsecond granularity.
+     * The expiration time must be at least 6 hours and at most 366 days
+     * from the `create_time` of the source backup. Once the `expire_time` has
+     * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+     * to free the resources used by the backup.
+     * </pre>
+     *
+     * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+     * </code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Timestamp,
+            com.google.protobuf.Timestamp.Builder,
+            com.google.protobuf.TimestampOrBuilder>
+        getExpireTimeFieldBuilder() {
+      if (expireTimeBuilder_ == null) {
+        expireTimeBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.protobuf.Timestamp,
+                com.google.protobuf.Timestamp.Builder,
+                com.google.protobuf.TimestampOrBuilder>(
+                getExpireTime(), getParentForChildren(), isClean());
+        expireTime_ = null;
+      }
+      return expireTimeBuilder_;
+    }
+
+    private com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryptionConfig_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig,
+            com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.Builder,
+            com.google.spanner.admin.database.v1.CopyBackupEncryptionConfigOrBuilder>
+        encryptionConfigBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The encryption configuration used to encrypt the backup. If this field is
+     * not specified, the backup will use the same
+     * encryption configuration as the source backup by default, namely
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+     * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @return Whether the encryptionConfig field is set.
+     */
+    public boolean hasEncryptionConfig() {
+      return encryptionConfigBuilder_ != null || encryptionConfig_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The encryption configuration used to encrypt the backup. If this field is
+     * not specified, the backup will use the same
+     * encryption configuration as the source backup by default, namely
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+     * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @return The encryptionConfig.
+     */
+    public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig getEncryptionConfig() {
+      if (encryptionConfigBuilder_ == null) {
+        return encryptionConfig_ == null
+            ? com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.getDefaultInstance()
+            : encryptionConfig_;
+      } else {
+        return encryptionConfigBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The encryption configuration used to encrypt the backup. If this field is
+     * not specified, the backup will use the same
+     * encryption configuration as the source backup by default, namely
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+     * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder setEncryptionConfig(
+        com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig value) {
+      if (encryptionConfigBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        encryptionConfig_ = value;
+        onChanged();
+      } else {
+        encryptionConfigBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The encryption configuration used to encrypt the backup. If this field is
+     * not specified, the backup will use the same
+     * encryption configuration as the source backup by default, namely
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+     * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder setEncryptionConfig(
+        com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.Builder builderForValue) {
+      if (encryptionConfigBuilder_ == null) {
+        encryptionConfig_ = builderForValue.build();
+        onChanged();
+      } else {
+        encryptionConfigBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The encryption configuration used to encrypt the backup. If this field is
+     * not specified, the backup will use the same
+     * encryption configuration as the source backup by default, namely
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+     * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder mergeEncryptionConfig(
+        com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig value) {
+      if (encryptionConfigBuilder_ == null) {
+        if (encryptionConfig_ != null) {
+          encryptionConfig_ =
+              com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.newBuilder(
+                      encryptionConfig_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          encryptionConfig_ = value;
+        }
+        onChanged();
+      } else {
+        encryptionConfigBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The encryption configuration used to encrypt the backup. If this field is
+     * not specified, the backup will use the same
+     * encryption configuration as the source backup by default, namely
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+     * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public Builder clearEncryptionConfig() {
+      if (encryptionConfigBuilder_ == null) {
+        encryptionConfig_ = null;
+        onChanged();
+      } else {
+        encryptionConfig_ = null;
+        encryptionConfigBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The encryption configuration used to encrypt the backup. If this field is
+     * not specified, the backup will use the same
+     * encryption configuration as the source backup by default, namely
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+     * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.Builder
+        getEncryptionConfigBuilder() {
+
+      onChanged();
+      return getEncryptionConfigFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The encryption configuration used to encrypt the backup. If this field is
+     * not specified, the backup will use the same
+     * encryption configuration as the source backup by default, namely
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+     * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    public com.google.spanner.admin.database.v1.CopyBackupEncryptionConfigOrBuilder
+        getEncryptionConfigOrBuilder() {
+      if (encryptionConfigBuilder_ != null) {
+        return encryptionConfigBuilder_.getMessageOrBuilder();
+      } else {
+        return encryptionConfig_ == null
+            ? com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.getDefaultInstance()
+            : encryptionConfig_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The encryption configuration used to encrypt the backup. If this field is
+     * not specified, the backup will use the same
+     * encryption configuration as the source backup by default, namely
+     * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+     * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+     * </pre>
+     *
+     * <code>
+     * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig,
+            com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.Builder,
+            com.google.spanner.admin.database.v1.CopyBackupEncryptionConfigOrBuilder>
+        getEncryptionConfigFieldBuilder() {
+      if (encryptionConfigBuilder_ == null) {
+        encryptionConfigBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig,
+                com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig.Builder,
+                com.google.spanner.admin.database.v1.CopyBackupEncryptionConfigOrBuilder>(
+                getEncryptionConfig(), getParentForChildren(), isClean());
+        encryptionConfig_ = null;
+      }
+      return encryptionConfigBuilder_;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.spanner.admin.database.v1.CopyBackupRequest)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.spanner.admin.database.v1.CopyBackupRequest)
+  private static final com.google.spanner.admin.database.v1.CopyBackupRequest DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.spanner.admin.database.v1.CopyBackupRequest();
+  }
+
+  public static com.google.spanner.admin.database.v1.CopyBackupRequest getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<CopyBackupRequest> PARSER =
+      new com.google.protobuf.AbstractParser<CopyBackupRequest>() {
+        @java.lang.Override
+        public CopyBackupRequest parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new CopyBackupRequest(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<CopyBackupRequest> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<CopyBackupRequest> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.spanner.admin.database.v1.CopyBackupRequest getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupRequestOrBuilder.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupRequestOrBuilder.java
new file mode 100644
index 00000000000..5a8be05a57e
--- /dev/null
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CopyBackupRequestOrBuilder.java
@@ -0,0 +1,228 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/spanner/admin/database/v1/backup.proto
+
+package com.google.spanner.admin.database.v1;
+
+public interface CopyBackupRequestOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.spanner.admin.database.v1.CopyBackupRequest)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the destination instance that will contain the backup copy.
+   * Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The parent.
+   */
+  java.lang.String getParent();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the destination instance that will contain the backup copy.
+   * Values are of the form: `projects/&lt;project&gt;/instances/&lt;instance&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string parent = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for parent.
+   */
+  com.google.protobuf.ByteString getParentBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The id of the backup copy.
+   * The `backup_id` appended to `parent` forms the full backup_uri of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string backup_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The backupId.
+   */
+  java.lang.String getBackupId();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The id of the backup copy.
+   * The `backup_id` appended to `parent` forms the full backup_uri of the form
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>string backup_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>
+   *
+   * @return The bytes for backupId.
+   */
+  com.google.protobuf.ByteString getBackupIdBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The source backup to be copied.
+   * The source backup needs to be in READY state for it to be copied.
+   * Once CopyBackup is in progress, the source backup cannot be deleted or
+   * cleaned up on expiration until CopyBackup is finished.
+   * Values are of the form:
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string source_backup = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The sourceBackup.
+   */
+  java.lang.String getSourceBackup();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The source backup to be copied.
+   * The source backup needs to be in READY state for it to be copied.
+   * Once CopyBackup is in progress, the source backup cannot be deleted or
+   * cleaned up on expiration until CopyBackup is finished.
+   * Values are of the form:
+   * `projects/&lt;project&gt;/instances/&lt;instance&gt;/backups/&lt;backup&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string source_backup = 3 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for sourceBackup.
+   */
+  com.google.protobuf.ByteString getSourceBackupBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The expiration time of the backup in microsecond granularity.
+   * The expiration time must be at least 6 hours and at most 366 days
+   * from the `create_time` of the source backup. Once the `expire_time` has
+   * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+   * to free the resources used by the backup.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   *
+   * @return Whether the expireTime field is set.
+   */
+  boolean hasExpireTime();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The expiration time of the backup in microsecond granularity.
+   * The expiration time must be at least 6 hours and at most 366 days
+   * from the `create_time` of the source backup. Once the `expire_time` has
+   * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+   * to free the resources used by the backup.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   *
+   * @return The expireTime.
+   */
+  com.google.protobuf.Timestamp getExpireTime();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The expiration time of the backup in microsecond granularity.
+   * The expiration time must be at least 6 hours and at most 366 days
+   * from the `create_time` of the source backup. Once the `expire_time` has
+   * passed, the backup is eligible to be automatically deleted by Cloud Spanner
+   * to free the resources used by the backup.
+   * </pre>
+   *
+   * <code>.google.protobuf.Timestamp expire_time = 4 [(.google.api.field_behavior) = REQUIRED];
+   * </code>
+   */
+  com.google.protobuf.TimestampOrBuilder getExpireTimeOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The encryption configuration used to encrypt the backup. If this field is
+   * not specified, the backup will use the same
+   * encryption configuration as the source backup by default, namely
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+   * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   *
+   * @return Whether the encryptionConfig field is set.
+   */
+  boolean hasEncryptionConfig();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The encryption configuration used to encrypt the backup. If this field is
+   * not specified, the backup will use the same
+   * encryption configuration as the source backup by default, namely
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+   * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   *
+   * @return The encryptionConfig.
+   */
+  com.google.spanner.admin.database.v1.CopyBackupEncryptionConfig getEncryptionConfig();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The encryption configuration used to encrypt the backup. If this field is
+   * not specified, the backup will use the same
+   * encryption configuration as the source backup by default, namely
+   * [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+   * `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+   * </pre>
+   *
+   * <code>
+   * .google.spanner.admin.database.v1.CopyBackupEncryptionConfig encryption_config = 5 [(.google.api.field_behavior) = OPTIONAL];
+   * </code>
+   */
+  com.google.spanner.admin.database.v1.CopyBackupEncryptionConfigOrBuilder
+      getEncryptionConfigOrBuilder();
+}
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsRequest.java
index 44a4c392f2c..a28e28e18f7 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsRequest.java
@@ -208,6 +208,8 @@ public com.google.protobuf.ByteString getParentBytes() {
    *      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
    *      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
    *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+   *      `metadata.&#64;type` must be specified first if filtering on metadata
+   *      fields.
    *   * `error` - Error associated with the long-running operation.
    *   * `response.&#64;type` - the type of response.
    *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -216,8 +218,11 @@ public com.google.protobuf.ByteString getParentBytes() {
    * you can specify AND, OR, and NOT logic explicitly.
    * Here are a few examples:
    *   * `done:true` - The operation is complete.
-   *   * `metadata.database:prod` - The database the backup was taken from has
-   *      a name containing the string "prod".
+   *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+   *      `metadata.database:prod` - Returns operations where:
+   *      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+   *      * The database the backup was taken from has a name containing the
+   *      string "prod".
    *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
    *     `(metadata.name:howl) AND` &#92;
    *     `(metadata.progress.start_time &lt; &#92;"2018-03-28T14:50:00Z&#92;") AND` &#92;
@@ -226,6 +231,29 @@ public com.google.protobuf.ByteString getParentBytes() {
    *     * The backup name contains the string "howl".
    *     * The operation started before 2018-03-28T14:50:00Z.
    *     * The operation resulted in an error.
+   *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` &#92;
+   *     `(metadata.source_backup:test) AND` &#92;
+   *     `(metadata.progress.start_time &lt; &#92;"2022-01-18T14:50:00Z&#92;") AND` &#92;
+   *     `(error:*)` - Returns operations where:
+   *     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+   *     * The source backup of the copied backup name contains the string
+   *     "test".
+   *     * The operation started before 2022-01-18T14:50:00Z.
+   *     * The operation resulted in an error.
+   *   * `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+   *     `(metadata.database:test_db)) OR` &#92;
+   *     `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+   *     AND` &#92;
+   *     `(metadata.source_backup:test_bkp)) AND` &#92;
+   *     `(error:*)` - Returns operations where:
+   *     * The operation's metadata matches either of criteria:
+   *       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+   *       database the backup was taken from has name containing string
+   *       "test_db"
+   *       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+   *       backup the backup was copied from has name containing string
+   *       "test_bkp"
+   *     * The operation resulted in an error.
    * </pre>
    *
    * <code>string filter = 2;</code>
@@ -262,6 +290,8 @@ public java.lang.String getFilter() {
    *      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
    *      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
    *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+   *      `metadata.&#64;type` must be specified first if filtering on metadata
+   *      fields.
    *   * `error` - Error associated with the long-running operation.
    *   * `response.&#64;type` - the type of response.
    *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -270,8 +300,11 @@ public java.lang.String getFilter() {
    * you can specify AND, OR, and NOT logic explicitly.
    * Here are a few examples:
    *   * `done:true` - The operation is complete.
-   *   * `metadata.database:prod` - The database the backup was taken from has
-   *      a name containing the string "prod".
+   *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+   *      `metadata.database:prod` - Returns operations where:
+   *      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+   *      * The database the backup was taken from has a name containing the
+   *      string "prod".
    *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
    *     `(metadata.name:howl) AND` &#92;
    *     `(metadata.progress.start_time &lt; &#92;"2018-03-28T14:50:00Z&#92;") AND` &#92;
@@ -280,6 +313,29 @@ public java.lang.String getFilter() {
    *     * The backup name contains the string "howl".
    *     * The operation started before 2018-03-28T14:50:00Z.
    *     * The operation resulted in an error.
+   *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` &#92;
+   *     `(metadata.source_backup:test) AND` &#92;
+   *     `(metadata.progress.start_time &lt; &#92;"2022-01-18T14:50:00Z&#92;") AND` &#92;
+   *     `(error:*)` - Returns operations where:
+   *     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+   *     * The source backup of the copied backup name contains the string
+   *     "test".
+   *     * The operation started before 2022-01-18T14:50:00Z.
+   *     * The operation resulted in an error.
+   *   * `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+   *     `(metadata.database:test_db)) OR` &#92;
+   *     `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+   *     AND` &#92;
+   *     `(metadata.source_backup:test_bkp)) AND` &#92;
+   *     `(error:*)` - Returns operations where:
+   *     * The operation's metadata matches either of criteria:
+   *       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+   *       database the backup was taken from has name containing string
+   *       "test_db"
+   *       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+   *       backup the backup was copied from has name containing string
+   *       "test_bkp"
+   *     * The operation resulted in an error.
    * </pre>
    *
    * <code>string filter = 2;</code>
@@ -884,6 +940,8 @@ public Builder setParentBytes(com.google.protobuf.ByteString value) {
      *      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -892,8 +950,11 @@ public Builder setParentBytes(com.google.protobuf.ByteString value) {
      * you can specify AND, OR, and NOT logic explicitly.
      * Here are a few examples:
      *   * `done:true` - The operation is complete.
-     *   * `metadata.database:prod` - The database the backup was taken from has
-     *      a name containing the string "prod".
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *      `metadata.database:prod` - Returns operations where:
+     *      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+     *      * The database the backup was taken from has a name containing the
+     *      string "prod".
      *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
      *     `(metadata.name:howl) AND` &#92;
      *     `(metadata.progress.start_time &lt; &#92;"2018-03-28T14:50:00Z&#92;") AND` &#92;
@@ -902,6 +963,29 @@ public Builder setParentBytes(com.google.protobuf.ByteString value) {
      *     * The backup name contains the string "howl".
      *     * The operation started before 2018-03-28T14:50:00Z.
      *     * The operation resulted in an error.
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` &#92;
+     *     `(metadata.source_backup:test) AND` &#92;
+     *     `(metadata.progress.start_time &lt; &#92;"2022-01-18T14:50:00Z&#92;") AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+     *     * The source backup of the copied backup name contains the string
+     *     "test".
+     *     * The operation started before 2022-01-18T14:50:00Z.
+     *     * The operation resulted in an error.
+     *   * `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *     `(metadata.database:test_db)) OR` &#92;
+     *     `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+     *     AND` &#92;
+     *     `(metadata.source_backup:test_bkp)) AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata matches either of criteria:
+     *       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+     *       database the backup was taken from has name containing string
+     *       "test_db"
+     *       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+     *       backup the backup was copied from has name containing string
+     *       "test_bkp"
+     *     * The operation resulted in an error.
      * </pre>
      *
      * <code>string filter = 2;</code>
@@ -937,6 +1021,8 @@ public java.lang.String getFilter() {
      *      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -945,8 +1031,11 @@ public java.lang.String getFilter() {
      * you can specify AND, OR, and NOT logic explicitly.
      * Here are a few examples:
      *   * `done:true` - The operation is complete.
-     *   * `metadata.database:prod` - The database the backup was taken from has
-     *      a name containing the string "prod".
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *      `metadata.database:prod` - Returns operations where:
+     *      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+     *      * The database the backup was taken from has a name containing the
+     *      string "prod".
      *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
      *     `(metadata.name:howl) AND` &#92;
      *     `(metadata.progress.start_time &lt; &#92;"2018-03-28T14:50:00Z&#92;") AND` &#92;
@@ -955,6 +1044,29 @@ public java.lang.String getFilter() {
      *     * The backup name contains the string "howl".
      *     * The operation started before 2018-03-28T14:50:00Z.
      *     * The operation resulted in an error.
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` &#92;
+     *     `(metadata.source_backup:test) AND` &#92;
+     *     `(metadata.progress.start_time &lt; &#92;"2022-01-18T14:50:00Z&#92;") AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+     *     * The source backup of the copied backup name contains the string
+     *     "test".
+     *     * The operation started before 2022-01-18T14:50:00Z.
+     *     * The operation resulted in an error.
+     *   * `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *     `(metadata.database:test_db)) OR` &#92;
+     *     `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+     *     AND` &#92;
+     *     `(metadata.source_backup:test_bkp)) AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata matches either of criteria:
+     *       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+     *       database the backup was taken from has name containing string
+     *       "test_db"
+     *       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+     *       backup the backup was copied from has name containing string
+     *       "test_bkp"
+     *     * The operation resulted in an error.
      * </pre>
      *
      * <code>string filter = 2;</code>
@@ -990,6 +1102,8 @@ public com.google.protobuf.ByteString getFilterBytes() {
      *      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -998,8 +1112,11 @@ public com.google.protobuf.ByteString getFilterBytes() {
      * you can specify AND, OR, and NOT logic explicitly.
      * Here are a few examples:
      *   * `done:true` - The operation is complete.
-     *   * `metadata.database:prod` - The database the backup was taken from has
-     *      a name containing the string "prod".
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *      `metadata.database:prod` - Returns operations where:
+     *      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+     *      * The database the backup was taken from has a name containing the
+     *      string "prod".
      *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
      *     `(metadata.name:howl) AND` &#92;
      *     `(metadata.progress.start_time &lt; &#92;"2018-03-28T14:50:00Z&#92;") AND` &#92;
@@ -1008,6 +1125,29 @@ public com.google.protobuf.ByteString getFilterBytes() {
      *     * The backup name contains the string "howl".
      *     * The operation started before 2018-03-28T14:50:00Z.
      *     * The operation resulted in an error.
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` &#92;
+     *     `(metadata.source_backup:test) AND` &#92;
+     *     `(metadata.progress.start_time &lt; &#92;"2022-01-18T14:50:00Z&#92;") AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+     *     * The source backup of the copied backup name contains the string
+     *     "test".
+     *     * The operation started before 2022-01-18T14:50:00Z.
+     *     * The operation resulted in an error.
+     *   * `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *     `(metadata.database:test_db)) OR` &#92;
+     *     `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+     *     AND` &#92;
+     *     `(metadata.source_backup:test_bkp)) AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata matches either of criteria:
+     *       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+     *       database the backup was taken from has name containing string
+     *       "test_db"
+     *       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+     *       backup the backup was copied from has name containing string
+     *       "test_bkp"
+     *     * The operation resulted in an error.
      * </pre>
      *
      * <code>string filter = 2;</code>
@@ -1042,6 +1182,8 @@ public Builder setFilter(java.lang.String value) {
      *      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -1050,8 +1192,11 @@ public Builder setFilter(java.lang.String value) {
      * you can specify AND, OR, and NOT logic explicitly.
      * Here are a few examples:
      *   * `done:true` - The operation is complete.
-     *   * `metadata.database:prod` - The database the backup was taken from has
-     *      a name containing the string "prod".
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *      `metadata.database:prod` - Returns operations where:
+     *      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+     *      * The database the backup was taken from has a name containing the
+     *      string "prod".
      *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
      *     `(metadata.name:howl) AND` &#92;
      *     `(metadata.progress.start_time &lt; &#92;"2018-03-28T14:50:00Z&#92;") AND` &#92;
@@ -1060,6 +1205,29 @@ public Builder setFilter(java.lang.String value) {
      *     * The backup name contains the string "howl".
      *     * The operation started before 2018-03-28T14:50:00Z.
      *     * The operation resulted in an error.
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` &#92;
+     *     `(metadata.source_backup:test) AND` &#92;
+     *     `(metadata.progress.start_time &lt; &#92;"2022-01-18T14:50:00Z&#92;") AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+     *     * The source backup of the copied backup name contains the string
+     *     "test".
+     *     * The operation started before 2022-01-18T14:50:00Z.
+     *     * The operation resulted in an error.
+     *   * `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *     `(metadata.database:test_db)) OR` &#92;
+     *     `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+     *     AND` &#92;
+     *     `(metadata.source_backup:test_bkp)) AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata matches either of criteria:
+     *       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+     *       database the backup was taken from has name containing string
+     *       "test_db"
+     *       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+     *       backup the backup was copied from has name containing string
+     *       "test_bkp"
+     *     * The operation resulted in an error.
      * </pre>
      *
      * <code>string filter = 2;</code>
@@ -1090,6 +1258,8 @@ public Builder clearFilter() {
      *      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -1098,8 +1268,11 @@ public Builder clearFilter() {
      * you can specify AND, OR, and NOT logic explicitly.
      * Here are a few examples:
      *   * `done:true` - The operation is complete.
-     *   * `metadata.database:prod` - The database the backup was taken from has
-     *      a name containing the string "prod".
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *      `metadata.database:prod` - Returns operations where:
+     *      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+     *      * The database the backup was taken from has a name containing the
+     *      string "prod".
      *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
      *     `(metadata.name:howl) AND` &#92;
      *     `(metadata.progress.start_time &lt; &#92;"2018-03-28T14:50:00Z&#92;") AND` &#92;
@@ -1108,6 +1281,29 @@ public Builder clearFilter() {
      *     * The backup name contains the string "howl".
      *     * The operation started before 2018-03-28T14:50:00Z.
      *     * The operation resulted in an error.
+     *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` &#92;
+     *     `(metadata.source_backup:test) AND` &#92;
+     *     `(metadata.progress.start_time &lt; &#92;"2022-01-18T14:50:00Z&#92;") AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+     *     * The source backup of the copied backup name contains the string
+     *     "test".
+     *     * The operation started before 2022-01-18T14:50:00Z.
+     *     * The operation resulted in an error.
+     *   * `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+     *     `(metadata.database:test_db)) OR` &#92;
+     *     `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+     *     AND` &#92;
+     *     `(metadata.source_backup:test_bkp)) AND` &#92;
+     *     `(error:*)` - Returns operations where:
+     *     * The operation's metadata matches either of criteria:
+     *       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+     *       database the backup was taken from has name containing string
+     *       "test_db"
+     *       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+     *       backup the backup was copied from has name containing string
+     *       "test_bkp"
+     *     * The operation resulted in an error.
      * </pre>
      *
      * <code>string filter = 2;</code>
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsRequestOrBuilder.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsRequestOrBuilder.java
index 6d48d7f5f3f..4d862ccc097 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsRequestOrBuilder.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsRequestOrBuilder.java
@@ -72,6 +72,8 @@ public interface ListBackupOperationsRequestOrBuilder
    *      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
    *      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
    *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+   *      `metadata.&#64;type` must be specified first if filtering on metadata
+   *      fields.
    *   * `error` - Error associated with the long-running operation.
    *   * `response.&#64;type` - the type of response.
    *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -80,8 +82,11 @@ public interface ListBackupOperationsRequestOrBuilder
    * you can specify AND, OR, and NOT logic explicitly.
    * Here are a few examples:
    *   * `done:true` - The operation is complete.
-   *   * `metadata.database:prod` - The database the backup was taken from has
-   *      a name containing the string "prod".
+   *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+   *      `metadata.database:prod` - Returns operations where:
+   *      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+   *      * The database the backup was taken from has a name containing the
+   *      string "prod".
    *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
    *     `(metadata.name:howl) AND` &#92;
    *     `(metadata.progress.start_time &lt; &#92;"2018-03-28T14:50:00Z&#92;") AND` &#92;
@@ -90,6 +95,29 @@ public interface ListBackupOperationsRequestOrBuilder
    *     * The backup name contains the string "howl".
    *     * The operation started before 2018-03-28T14:50:00Z.
    *     * The operation resulted in an error.
+   *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` &#92;
+   *     `(metadata.source_backup:test) AND` &#92;
+   *     `(metadata.progress.start_time &lt; &#92;"2022-01-18T14:50:00Z&#92;") AND` &#92;
+   *     `(error:*)` - Returns operations where:
+   *     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+   *     * The source backup of the copied backup name contains the string
+   *     "test".
+   *     * The operation started before 2022-01-18T14:50:00Z.
+   *     * The operation resulted in an error.
+   *   * `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+   *     `(metadata.database:test_db)) OR` &#92;
+   *     `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+   *     AND` &#92;
+   *     `(metadata.source_backup:test_bkp)) AND` &#92;
+   *     `(error:*)` - Returns operations where:
+   *     * The operation's metadata matches either of criteria:
+   *       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+   *       database the backup was taken from has name containing string
+   *       "test_db"
+   *       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+   *       backup the backup was copied from has name containing string
+   *       "test_bkp"
+   *     * The operation resulted in an error.
    * </pre>
    *
    * <code>string filter = 2;</code>
@@ -115,6 +143,8 @@ public interface ListBackupOperationsRequestOrBuilder
    *      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
    *      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
    *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+   *      `metadata.&#64;type` must be specified first if filtering on metadata
+   *      fields.
    *   * `error` - Error associated with the long-running operation.
    *   * `response.&#64;type` - the type of response.
    *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -123,8 +153,11 @@ public interface ListBackupOperationsRequestOrBuilder
    * you can specify AND, OR, and NOT logic explicitly.
    * Here are a few examples:
    *   * `done:true` - The operation is complete.
-   *   * `metadata.database:prod` - The database the backup was taken from has
-   *      a name containing the string "prod".
+   *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+   *      `metadata.database:prod` - Returns operations where:
+   *      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+   *      * The database the backup was taken from has a name containing the
+   *      string "prod".
    *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
    *     `(metadata.name:howl) AND` &#92;
    *     `(metadata.progress.start_time &lt; &#92;"2018-03-28T14:50:00Z&#92;") AND` &#92;
@@ -133,6 +166,29 @@ public interface ListBackupOperationsRequestOrBuilder
    *     * The backup name contains the string "howl".
    *     * The operation started before 2018-03-28T14:50:00Z.
    *     * The operation resulted in an error.
+   *   * `(metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` &#92;
+   *     `(metadata.source_backup:test) AND` &#92;
+   *     `(metadata.progress.start_time &lt; &#92;"2022-01-18T14:50:00Z&#92;") AND` &#92;
+   *     `(error:*)` - Returns operations where:
+   *     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+   *     * The source backup of the copied backup name contains the string
+   *     "test".
+   *     * The operation started before 2022-01-18T14:50:00Z.
+   *     * The operation resulted in an error.
+   *   * `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` &#92;
+   *     `(metadata.database:test_db)) OR` &#92;
+   *     `((metadata.&#64;type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+   *     AND` &#92;
+   *     `(metadata.source_backup:test_bkp)) AND` &#92;
+   *     `(error:*)` - Returns operations where:
+   *     * The operation's metadata matches either of criteria:
+   *       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+   *       database the backup was taken from has name containing string
+   *       "test_db"
+   *       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+   *       backup the backup was copied from has name containing string
+   *       "test_bkp"
+   *     * The operation resulted in an error.
    * </pre>
    *
    * <code>string filter = 2;</code>
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsResponse.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsResponse.java
index f9b74a69539..be50a78b625 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsResponse.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsResponse.java
@@ -135,11 +135,11 @@ public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
@@ -156,11 +156,11 @@ public java.util.List<com.google.longrunning.Operation> getOperationsList() {
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
@@ -178,11 +178,11 @@ public java.util.List<com.google.longrunning.Operation> getOperationsList() {
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
@@ -199,11 +199,11 @@ public int getOperationsCount() {
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
@@ -220,11 +220,11 @@ public com.google.longrunning.Operation getOperations(int index) {
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
@@ -695,11 +695,11 @@ private void ensureOperationsIsMutable() {
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -719,11 +719,11 @@ public java.util.List<com.google.longrunning.Operation> getOperationsList() {
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -743,11 +743,11 @@ public int getOperationsCount() {
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -767,11 +767,11 @@ public com.google.longrunning.Operation getOperations(int index) {
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -797,11 +797,11 @@ public Builder setOperations(int index, com.google.longrunning.Operation value)
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -825,11 +825,11 @@ public Builder setOperations(
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -855,11 +855,11 @@ public Builder addOperations(com.google.longrunning.Operation value) {
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -885,11 +885,11 @@ public Builder addOperations(int index, com.google.longrunning.Operation value)
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -912,11 +912,11 @@ public Builder addOperations(com.google.longrunning.Operation.Builder builderFor
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -940,11 +940,11 @@ public Builder addOperations(
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -968,11 +968,11 @@ public Builder addAllOperations(
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -995,11 +995,11 @@ public Builder clearOperations() {
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -1022,11 +1022,11 @@ public Builder removeOperations(int index) {
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -1042,11 +1042,11 @@ public com.google.longrunning.Operation.Builder getOperationsBuilder(int index)
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -1066,11 +1066,11 @@ public com.google.longrunning.OperationOrBuilder getOperationsOrBuilder(int inde
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -1091,11 +1091,11 @@ public com.google.longrunning.OperationOrBuilder getOperationsOrBuilder(int inde
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -1112,11 +1112,11 @@ public com.google.longrunning.Operation.Builder addOperationsBuilder() {
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
@@ -1133,11 +1133,11 @@ public com.google.longrunning.Operation.Builder addOperationsBuilder(int index)
      * <pre>
      * The list of matching backup [long-running
      * operations][google.longrunning.Operation]. Each operation's name will be
-     * prefixed by the backup's name and the operation's
-     * [metadata][google.longrunning.Operation.metadata] will be of type
-     * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-     * pending or have completed/failed/canceled within the last 7 days.
-     * Operations returned are ordered by
+     * prefixed by the backup's name. The operation's
+     * [metadata][google.longrunning.Operation.metadata] field type
+     * `metadata.type_url` describes the type of the metadata. Operations returned
+     * include those that are pending or have completed/failed/canceled within the
+     * last 7 days. Operations returned are ordered by
      * `operation.metadata.value.progress.start_time` in descending order starting
      * from the most recently started operation.
      * </pre>
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsResponseOrBuilder.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsResponseOrBuilder.java
index 05c3031f8d7..f170588152b 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsResponseOrBuilder.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupOperationsResponseOrBuilder.java
@@ -29,11 +29,11 @@ public interface ListBackupOperationsResponseOrBuilder
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
@@ -47,11 +47,11 @@ public interface ListBackupOperationsResponseOrBuilder
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
@@ -65,11 +65,11 @@ public interface ListBackupOperationsResponseOrBuilder
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
@@ -83,11 +83,11 @@ public interface ListBackupOperationsResponseOrBuilder
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
@@ -101,11 +101,11 @@ public interface ListBackupOperationsResponseOrBuilder
    * <pre>
    * The list of matching backup [long-running
    * operations][google.longrunning.Operation]. Each operation's name will be
-   * prefixed by the backup's name and the operation's
-   * [metadata][google.longrunning.Operation.metadata] will be of type
-   * [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-   * pending or have completed/failed/canceled within the last 7 days.
-   * Operations returned are ordered by
+   * prefixed by the backup's name. The operation's
+   * [metadata][google.longrunning.Operation.metadata] field type
+   * `metadata.type_url` describes the type of the metadata. Operations returned
+   * include those that are pending or have completed/failed/canceled within the
+   * last 7 days. Operations returned are ordered by
    * `operation.metadata.value.progress.start_time` in descending order starting
    * from the most recently started operation.
    * </pre>
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsRequest.java
index ed376a6f05d..da529706e56 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsRequest.java
@@ -208,6 +208,8 @@ public com.google.protobuf.ByteString getParentBytes() {
    *      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
    *      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
    *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+   *      `metadata.&#64;type` must be specified first, if filtering on metadata
+   *      fields.
    *   * `error` - Error associated with the long-running operation.
    *   * `response.&#64;type` - the type of response.
    *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -264,6 +266,8 @@ public java.lang.String getFilter() {
    *      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
    *      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
    *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+   *      `metadata.&#64;type` must be specified first, if filtering on metadata
+   *      fields.
    *   * `error` - Error associated with the long-running operation.
    *   * `response.&#64;type` - the type of response.
    *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -892,6 +896,8 @@ public Builder setParentBytes(com.google.protobuf.ByteString value) {
      *      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first, if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -947,6 +953,8 @@ public java.lang.String getFilter() {
      *      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first, if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -1002,6 +1010,8 @@ public com.google.protobuf.ByteString getFilterBytes() {
      *      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first, if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -1056,6 +1066,8 @@ public Builder setFilter(java.lang.String value) {
      *      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first, if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -1106,6 +1118,8 @@ public Builder clearFilter() {
      *      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
      *      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
      *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+     *      `metadata.&#64;type` must be specified first, if filtering on metadata
+     *      fields.
      *   * `error` - Error associated with the long-running operation.
      *   * `response.&#64;type` - the type of response.
      *   * `response.&lt;field_name&gt;` - any field in response.value.
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsRequestOrBuilder.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsRequestOrBuilder.java
index 38eb5693e1a..e020307e57f 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsRequestOrBuilder.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsRequestOrBuilder.java
@@ -72,6 +72,8 @@ public interface ListDatabaseOperationsRequestOrBuilder
    *      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
    *      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
    *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+   *      `metadata.&#64;type` must be specified first, if filtering on metadata
+   *      fields.
    *   * `error` - Error associated with the long-running operation.
    *   * `response.&#64;type` - the type of response.
    *   * `response.&lt;field_name&gt;` - any field in response.value.
@@ -117,6 +119,8 @@ public interface ListDatabaseOperationsRequestOrBuilder
    *      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
    *      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
    *   * `metadata.&lt;field_name&gt;` - any field in metadata.value.
+   *      `metadata.&#64;type` must be specified first, if filtering on metadata
+   *      fields.
    *   * `error` - Error associated with the long-running operation.
    *   * `response.&#64;type` - the type of response.
    *   * `response.&lt;field_name&gt;` - any field in response.value.
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/SpannerDatabaseAdminProto.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/SpannerDatabaseAdminProto.java
index 1acad6985e1..8aa471048a2 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/SpannerDatabaseAdminProto.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/SpannerDatabaseAdminProto.java
@@ -116,214 +116,221 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "source.proto\032\036google/iam/v1/iam_policy.p"
           + "roto\032\032google/iam/v1/policy.proto\032#google"
           + "/longrunning/operations.proto\032\033google/pr"
-          + "otobuf/empty.proto\032 google/protobuf/fiel"
-          + "d_mask.proto\032\037google/protobuf/timestamp."
-          + "proto\032-google/spanner/admin/database/v1/"
-          + "backup.proto\032-google/spanner/admin/datab"
-          + "ase/v1/common.proto\"\253\001\n\013RestoreInfo\022H\n\013s"
-          + "ource_type\030\001 \001(\01623.google.spanner.admin."
+          + "otobuf/empty.proto\032\037google/protobuf/time"
+          + "stamp.proto\032-google/spanner/admin/databa"
+          + "se/v1/backup.proto\032-google/spanner/admin"
+          + "/database/v1/common.proto\"\253\001\n\013RestoreInf"
+          + "o\022H\n\013source_type\030\001 \001(\01623.google.spanner."
+          + "admin.database.v1.RestoreSourceType\022C\n\013b"
+          + "ackup_info\030\002 \001(\0132,.google.spanner.admin."
+          + "database.v1.BackupInfoH\000B\r\n\013source_info\""
+          + "\220\006\n\010Database\022\021\n\004name\030\001 \001(\tB\003\340A\002\022D\n\005state"
+          + "\030\002 \001(\01620.google.spanner.admin.database.v"
+          + "1.Database.StateB\003\340A\003\0224\n\013create_time\030\003 \001"
+          + "(\0132\032.google.protobuf.TimestampB\003\340A\003\022H\n\014r"
+          + "estore_info\030\004 \001(\0132-.google.spanner.admin"
+          + ".database.v1.RestoreInfoB\003\340A\003\022R\n\021encrypt"
+          + "ion_config\030\005 \001(\01322.google.spanner.admin."
+          + "database.v1.EncryptionConfigB\003\340A\003\022N\n\017enc"
+          + "ryption_info\030\010 \003(\01320.google.spanner.admi"
+          + "n.database.v1.EncryptionInfoB\003\340A\003\022%\n\030ver"
+          + "sion_retention_period\030\006 \001(\tB\003\340A\003\022>\n\025earl"
+          + "iest_version_time\030\007 \001(\0132\032.google.protobu"
+          + "f.TimestampB\003\340A\003\022\033\n\016default_leader\030\t \001(\t"
+          + "B\003\340A\003\022P\n\020database_dialect\030\n \001(\01621.google"
+          + ".spanner.admin.database.v1.DatabaseDiale"
+          + "ctB\003\340A\003\"M\n\005State\022\025\n\021STATE_UNSPECIFIED\020\000\022"
+          + "\014\n\010CREATING\020\001\022\t\n\005READY\020\002\022\024\n\020READY_OPTIMI"
+          + "ZING\020\003:b\352A_\n\037spanner.googleapis.com/Data"
+          + "base\022<projects/{project}/instances/{inst"
+          + "ance}/databases/{database}\"v\n\024ListDataba"
+          + "sesRequest\0227\n\006parent\030\001 \001(\tB\'\340A\002\372A!\n\037span"
+          + "ner.googleapis.com/Instance\022\021\n\tpage_size"
+          + "\030\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\"o\n\025ListDataba"
+          + "sesResponse\022=\n\tdatabases\030\001 \003(\0132*.google."
+          + "spanner.admin.database.v1.Database\022\027\n\017ne"
+          + "xt_page_token\030\002 \001(\t\"\264\002\n\025CreateDatabaseRe"
+          + "quest\0227\n\006parent\030\001 \001(\tB\'\340A\002\372A!\n\037spanner.g"
+          + "oogleapis.com/Instance\022\035\n\020create_stateme"
+          + "nt\030\002 \001(\tB\003\340A\002\022\035\n\020extra_statements\030\003 \003(\tB"
+          + "\003\340A\001\022R\n\021encryption_config\030\004 \001(\01322.google"
+          + ".spanner.admin.database.v1.EncryptionCon"
+          + "figB\003\340A\001\022P\n\020database_dialect\030\005 \001(\01621.goo"
+          + "gle.spanner.admin.database.v1.DatabaseDi"
+          + "alectB\003\340A\001\"P\n\026CreateDatabaseMetadata\0226\n\010"
+          + "database\030\001 \001(\tB$\372A!\n\037spanner.googleapis."
+          + "com/Database\"K\n\022GetDatabaseRequest\0225\n\004na"
+          + "me\030\001 \001(\tB\'\340A\002\372A!\n\037spanner.googleapis.com"
+          + "/Database\"\204\001\n\030UpdateDatabaseDdlRequest\0229"
+          + "\n\010database\030\001 \001(\tB\'\340A\002\372A!\n\037spanner.google"
+          + "apis.com/Database\022\027\n\nstatements\030\002 \003(\tB\003\340"
+          + "A\002\022\024\n\014operation_id\030\003 \001(\t\"\375\001\n\031UpdateDatab"
+          + "aseDdlMetadata\0226\n\010database\030\001 \001(\tB$\372A!\n\037s"
+          + "panner.googleapis.com/Database\022\022\n\nstatem"
+          + "ents\030\002 \003(\t\0225\n\021commit_timestamps\030\003 \003(\0132\032."
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+          + "source=projects/*/instances/*/backups/*}"
+          + ":setIamPolicy:\001*\332A\017resource,policy\022\344\001\n\014G"
+          + "etIamPolicy\022\".google.iam.v1.GetIamPolicy"
+          + "Request\032\025.google.iam.v1.Policy\"\230\001\202\323\344\223\002\206\001"
+          + "\">/v1/{resource=projects/*/instances/*/d"
+          + "atabases/*}:getIamPolicy:\001*ZA\"</v1/{reso"
+          + "urce=projects/*/instances/*/backups/*}:g"
+          + "etIamPolicy:\001*\332A\010resource\022\234\002\n\022TestIamPer"
+          + "missions\022(.google.iam.v1.TestIamPermissi"
+          + "onsRequest\032).google.iam.v1.TestIamPermis"
+          + "sionsResponse\"\260\001\202\323\344\223\002\222\001\"D/v1/{resource=p"
+          + "rojects/*/instances/*/databases/*}:testI"
+          + "amPermissions:\001*ZG\"B/v1/{resource=projec"
+          + "ts/*/instances/*/backups/*}:testIamPermi"
+          + "ssions:\001*\332A\024resource,permissions\022\237\002\n\014Cre"
+          + "ateBackup\0225.google.spanner.admin.databas"
+          + "e.v1.CreateBackupRequest\032\035.google.longru"
+          + "nning.Operation\"\270\001\202\323\344\223\0025\"+/v1/{parent=pr"
+          + "ojects/*/instances/*}/backups:\006backup\332A\027"
+          + "parent,backup,backup_id\312A`\n\'google.spann"
+          + "er.admin.database.v1.Backup\0225google.span"
+          + "ner.admin.database.v1.CreateBackupMetada"
+          + "ta\022\254\002\n\nCopyBackup\0223.google.spanner.admin"
+          + ".database.v1.CopyBackupRequest\032\035.google."
+          + "longrunning.Operation\"\311\001\202\323\344\223\0025\"0/v1/{par"
+          + "ent=projects/*/instances/*}/backups:copy"
+          + ":\001*\332A*parent,backup_id,source_backup,exp"
+          + "ire_time\312A^\n\'google.spanner.admin.databa"
+          + "se.v1.Backup\0223google.spanner.admin.datab"
+          + "ase.v1.CopyBackupMetadata\022\245\001\n\tGetBackup\022"
+          + "2.google.spanner.admin.database.v1.GetBa"
+          + "ckupRequest\032(.google.spanner.admin.datab"
+          + "ase.v1.Backup\":\202\323\344\223\002-\022+/v1/{name=project"
+          + "s/*/instances/*/backups/*}\332A\004name\022\310\001\n\014Up"
+          + "dateBackup\0225.google.spanner.admin.databa"
+          + "se.v1.UpdateBackupRequest\032(.google.spann"
+          + "er.admin.database.v1.Backup\"W\202\323\344\223\002<22/v1"
+          + "/{backup.name=projects/*/instances/*/bac"
+          + "kups/*}:\006backup\332A\022backup,update_mask\022\231\001\n"
+          + "\014DeleteBackup\0225.google.spanner.admin.dat"
+          + "abase.v1.DeleteBackupRequest\032\026.google.pr"
+          + "otobuf.Empty\":\202\323\344\223\002-*+/v1/{name=projects"
+          + "/*/instances/*/backups/*}\332A\004name\022\270\001\n\013Lis"
+          + "tBackups\0224.google.spanner.admin.database"
+          + ".v1.ListBackupsRequest\0325.google.spanner."
+          + "admin.database.v1.ListBackupsResponse\"<\202"
+          + "\323\344\223\002-\022+/v1/{parent=projects/*/instances/"
+          + "*}/backups\332A\006parent\022\261\002\n\017RestoreDatabase\022"
+          + "8.google.spanner.admin.database.v1.Resto"
+          + "reDatabaseRequest\032\035.google.longrunning.O"
+          + "peration\"\304\001\202\323\344\223\002:\"5/v1/{parent=projects/"
+          + "*/instances/*}/databases:restore:\001*\332A\031pa"
+          + "rent,database_id,backup\312Ae\n)google.spann"
+          + "er.admin.database.v1.Database\0228google.sp"
+          + "anner.admin.database.v1.RestoreDatabaseM"
+          + "etadata\022\344\001\n\026ListDatabaseOperations\022?.goo"
+          + "gle.spanner.admin.database.v1.ListDataba"
+          + "seOperationsRequest\032@.google.spanner.adm"
+          + "in.database.v1.ListDatabaseOperationsRes"
+          + "ponse\"G\202\323\344\223\0028\0226/v1/{parent=projects/*/in"
+          + "stances/*}/databaseOperations\332A\006parent\022\334"
+          + "\001\n\024ListBackupOperations\022=.google.spanner"
+          + ".admin.database.v1.ListBackupOperationsR"
+          + "equest\032>.google.spanner.admin.database.v"
+          + "1.ListBackupOperationsResponse\"E\202\323\344\223\0026\0224"
+          + "/v1/{parent=projects/*/instances/*}/back"
+          + "upOperations\332A\006parent\032x\312A\026spanner.google"
+          + "apis.com\322A\\https://www.googleapis.com/au"
+          + "th/cloud-platform,https://www.googleapis"
+          + ".com/auth/spanner.adminB\332\002\n$com.google.s"
+          + "panner.admin.database.v1B\031SpannerDatabas"
+          + "eAdminProtoP\001ZHgoogle.golang.org/genprot"
+          + "o/googleapis/spanner/admin/database/v1;d"
+          + "atabase\252\002&Google.Cloud.Spanner.Admin.Dat"
+          + "abase.V1\312\002&Google\\Cloud\\Spanner\\Admin\\Da"
+          + "tabase\\V1\352\002+Google::Cloud::Spanner::Admi"
+          + "n::Database::V1\352AJ\n\037spanner.googleapis.c"
+          + "om/Instance\022\'projects/{project}/instance"
+          + "s/{instance}b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -337,7 +344,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               com.google.iam.v1.PolicyProto.getDescriptor(),
               com.google.longrunning.OperationsProto.getDescriptor(),
               com.google.protobuf.EmptyProto.getDescriptor(),
-              com.google.protobuf.FieldMaskProto.getDescriptor(),
               com.google.protobuf.TimestampProto.getDescriptor(),
               com.google.spanner.admin.database.v1.BackupProto.getDescriptor(),
               com.google.spanner.admin.database.v1.CommonProto.getDescriptor(),
@@ -522,7 +528,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     com.google.iam.v1.PolicyProto.getDescriptor();
     com.google.longrunning.OperationsProto.getDescriptor();
     com.google.protobuf.EmptyProto.getDescriptor();
-    com.google.protobuf.FieldMaskProto.getDescriptor();
     com.google.protobuf.TimestampProto.getDescriptor();
     com.google.spanner.admin.database.v1.BackupProto.getDescriptor();
     com.google.spanner.admin.database.v1.CommonProto.getDescriptor();
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/backup.proto b/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/backup.proto
index 1e9ce30058a..5e019543eb9 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/backup.proto
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/backup.proto
@@ -1,4 +1,4 @@
-// Copyright 2021 Google LLC
+// Copyright 2022 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@ syntax = "proto3";
 
 package google.spanner.admin.database.v1;
 
-import "google/api/annotations.proto";
 import "google/api/field_behavior.proto";
 import "google/api/resource.proto";
 import "google/longrunning/operations.proto";
@@ -120,6 +119,27 @@ message Backup {
 
   // Output only. The database dialect information for the backup.
   DatabaseDialect database_dialect = 10 [(google.api.field_behavior) = OUTPUT_ONLY];
+
+  // Output only. The names of the destination backups being created by copying
+  // this source backup. The backup names are of the form
+  // `projects/<project>/instances/<instance>/backups/<backup>`.
+  // Referencing backups may exist in different instances. The existence of
+  // any referencing backup prevents the backup from being deleted. When the
+  // copy operation is done (either successfully completed or cancelled or the
+  // destination backup is deleted), the reference to the backup is removed.
+  repeated string referencing_backups = 11 [
+    (google.api.field_behavior) = OUTPUT_ONLY,
+    (google.api.resource_reference) = {
+      type: "spanner.googleapis.com/Backup"
+    }
+  ];
+
+  // Output only. The max allowed expiration time of the backup, with
+  // microseconds granularity. A backup's expiration time can be configured in
+  // multiple APIs: CreateBackup, UpdateBackup, CopyBackup. When updating or
+  // copying an existing backup, the expiration time specified must be
+  // less than `Backup.max_expire_time`.
+  google.protobuf.Timestamp max_expire_time = 12 [(google.api.field_behavior) = OUTPUT_ONLY];
 }
 
 // The request for [CreateBackup][google.spanner.admin.database.v1.DatabaseAdmin.CreateBackup].
@@ -185,6 +205,86 @@ message CreateBackupMetadata {
   google.protobuf.Timestamp cancel_time = 4;
 }
 
+// The request for [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
+message CopyBackupRequest {
+  // Required. The name of the destination instance that will contain the backup copy.
+  // Values are of the form: `projects/<project>/instances/<instance>`.
+  string parent = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "spanner.googleapis.com/Instance"
+    }
+  ];
+
+  // Required. The id of the backup copy.
+  // The `backup_id` appended to `parent` forms the full backup_uri of the form
+  // `projects/<project>/instances/<instance>/backups/<backup>`.
+  string backup_id = 2 [(google.api.field_behavior) = REQUIRED];
+
+  // Required. The source backup to be copied.
+  // The source backup needs to be in READY state for it to be copied.
+  // Once CopyBackup is in progress, the source backup cannot be deleted or
+  // cleaned up on expiration until CopyBackup is finished.
+  // Values are of the form:
+  // `projects/<project>/instances/<instance>/backups/<backup>`.
+  string source_backup = 3 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "spanner.googleapis.com/Backup"
+    }
+  ];
+
+  // Required. The expiration time of the backup in microsecond granularity.
+  // The expiration time must be at least 6 hours and at most 366 days
+  // from the `create_time` of the source backup. Once the `expire_time` has
+  // passed, the backup is eligible to be automatically deleted by Cloud Spanner
+  // to free the resources used by the backup.
+  google.protobuf.Timestamp expire_time = 4 [(google.api.field_behavior) = REQUIRED];
+
+  // Optional. The encryption configuration used to encrypt the backup. If this field is
+  // not specified, the backup will use the same
+  // encryption configuration as the source backup by default, namely
+  // [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] =
+  // `USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION`.
+  CopyBackupEncryptionConfig encryption_config = 5 [(google.api.field_behavior) = OPTIONAL];
+}
+
+// Metadata type for the google.longrunning.Operation returned by
+// [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup].
+message CopyBackupMetadata {
+  // The name of the backup being created through the copy operation.
+  // Values are of the form
+  // `projects/<project>/instances/<instance>/backups/<backup>`.
+  string name = 1 [(google.api.resource_reference) = {
+                     type: "spanner.googleapis.com/Backup"
+                   }];
+
+  // The name of the source backup that is being copied.
+  // Values are of the form
+  // `projects/<project>/instances/<instance>/backups/<backup>`.
+  string source_backup = 2 [(google.api.resource_reference) = {
+                              type: "spanner.googleapis.com/Backup"
+                            }];
+
+  // The progress of the
+  // [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup] operation.
+  OperationProgress progress = 3;
+
+  // The time at which cancellation of CopyBackup operation was received.
+  // [Operations.CancelOperation][google.longrunning.Operations.CancelOperation]
+  // starts asynchronous cancellation on a long-running operation. The server
+  // makes a best effort to cancel the operation, but success is not guaranteed.
+  // Clients can use
+  // [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+  // other methods to check whether the cancellation succeeded or whether the
+  // operation completed despite cancellation. On successful cancellation,
+  // the operation is not deleted; instead, it becomes an operation with
+  // an [Operation.error][google.longrunning.Operation.error] value with a
+  // [google.rpc.Status.code][google.rpc.Status.code] of 1,
+  // corresponding to `Code.CANCELLED`.
+  google.protobuf.Timestamp cancel_time = 4;
+}
+
 // The request for [UpdateBackup][google.spanner.admin.database.v1.DatabaseAdmin.UpdateBackup].
 message UpdateBackupRequest {
   // Required. The backup to update. `backup.name`, and the fields to be updated
@@ -327,6 +427,8 @@ message ListBackupOperationsRequest {
   //      for [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] is
   //      `type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata`.
   //   * `metadata.<field_name>` - any field in metadata.value.
+  //      `metadata.@type` must be specified first if filtering on metadata
+  //      fields.
   //   * `error` - Error associated with the long-running operation.
   //   * `response.@type` - the type of response.
   //   * `response.<field_name>` - any field in response.value.
@@ -338,8 +440,11 @@ message ListBackupOperationsRequest {
   // Here are a few examples:
   //
   //   * `done:true` - The operation is complete.
-  //   * `metadata.database:prod` - The database the backup was taken from has
-  //      a name containing the string "prod".
+  //   * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` \
+  //      `metadata.database:prod` - Returns operations where:
+  //      * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata].
+  //      * The database the backup was taken from has a name containing the
+  //      string "prod".
   //   * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` \
   //     `(metadata.name:howl) AND` \
   //     `(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND` \
@@ -348,6 +453,29 @@ message ListBackupOperationsRequest {
   //     * The backup name contains the string "howl".
   //     * The operation started before 2018-03-28T14:50:00Z.
   //     * The operation resulted in an error.
+  //   * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata) AND` \
+  //     `(metadata.source_backup:test) AND` \
+  //     `(metadata.progress.start_time < \"2022-01-18T14:50:00Z\") AND` \
+  //     `(error:*)` - Returns operations where:
+  //     * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+  //     * The source backup of the copied backup name contains the string
+  //     "test".
+  //     * The operation started before 2022-01-18T14:50:00Z.
+  //     * The operation resulted in an error.
+  //   * `((metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CreateBackupMetadata) AND` \
+  //     `(metadata.database:test_db)) OR` \
+  //     `((metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.CopyBackupMetadata)
+  //     AND` \
+  //     `(metadata.source_backup:test_bkp)) AND` \
+  //     `(error:*)` - Returns operations where:
+  //     * The operation's metadata matches either of criteria:
+  //       * The operation's metadata type is [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata] AND the
+  //       database the backup was taken from has name containing string
+  //       "test_db"
+  //       * The operation's metadata type is [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata] AND the
+  //       backup the backup was copied from has name containing string
+  //       "test_bkp"
+  //     * The operation resulted in an error.
   string filter = 2;
 
   // Number of operations to be returned in the response. If 0 or
@@ -366,11 +494,11 @@ message ListBackupOperationsRequest {
 message ListBackupOperationsResponse {
   // The list of matching backup [long-running
   // operations][google.longrunning.Operation]. Each operation's name will be
-  // prefixed by the backup's name and the operation's
-  // [metadata][google.longrunning.Operation.metadata] will be of type
-  // [CreateBackupMetadata][google.spanner.admin.database.v1.CreateBackupMetadata]. Operations returned include those that are
-  // pending or have completed/failed/canceled within the last 7 days.
-  // Operations returned are ordered by
+  // prefixed by the backup's name. The operation's
+  // [metadata][google.longrunning.Operation.metadata] field type
+  // `metadata.type_url` describes the type of the metadata. Operations returned
+  // include those that are pending or have completed/failed/canceled within the
+  // last 7 days. Operations returned are ordered by
   // `operation.metadata.value.progress.start_time` in descending order starting
   // from the most recently started operation.
   repeated google.longrunning.Operation operations = 1;
@@ -442,3 +570,40 @@ message CreateBackupEncryptionConfig {
     }
   ];
 }
+
+// Encryption configuration for the copied backup.
+message CopyBackupEncryptionConfig {
+  // Encryption types for the backup.
+  enum EncryptionType {
+    // Unspecified. Do not use.
+    ENCRYPTION_TYPE_UNSPECIFIED = 0;
+
+    // This is the default option for [CopyBackup][google.spanner.admin.database.v1.DatabaseAdmin.CopyBackup]
+    // when [encryption_config][google.spanner.admin.database.v1.CopyBackupEncryptionConfig] is not specified.
+    // For example, if the source backup is using `Customer_Managed_Encryption`,
+    // the backup will be using the same Cloud KMS key as the source backup.
+    USE_CONFIG_DEFAULT_OR_BACKUP_ENCRYPTION = 1;
+
+    // Use Google default encryption.
+    GOOGLE_DEFAULT_ENCRYPTION = 2;
+
+    // Use customer managed encryption. If specified, `kms_key_name`
+    // must contain a valid Cloud KMS key.
+    CUSTOMER_MANAGED_ENCRYPTION = 3;
+  }
+
+  // Required. The encryption type of the backup.
+  EncryptionType encryption_type = 1 [(google.api.field_behavior) = REQUIRED];
+
+  // Optional. The Cloud KMS key that will be used to protect the backup.
+  // This field should be set only when
+  // [encryption_type][google.spanner.admin.database.v1.CopyBackupEncryptionConfig.encryption_type] is
+  // `CUSTOMER_MANAGED_ENCRYPTION`. Values are of the form
+  // `projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>`.
+  string kms_key_name = 2 [
+    (google.api.field_behavior) = OPTIONAL,
+    (google.api.resource_reference) = {
+      type: "cloudkms.googleapis.com/CryptoKey"
+    }
+  ];
+}
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/common.proto b/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/common.proto
index 739a486458e..720ebb95dbc 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/common.proto
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/common.proto
@@ -1,4 +1,4 @@
-// Copyright 2021 Google LLC
+// Copyright 2022 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@ syntax = "proto3";
 
 package google.spanner.admin.database.v1;
 
-import "google/api/annotations.proto";
 import "google/api/field_behavior.proto";
 import "google/api/resource.proto";
 import "google/protobuf/timestamp.proto";
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/spanner_database_admin.proto b/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/spanner_database_admin.proto
index 89d582412db..38023e0721c 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/spanner_database_admin.proto
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/proto/google/spanner/admin/database/v1/spanner_database_admin.proto
@@ -1,4 +1,4 @@
-// Copyright 2021 Google LLC
+// Copyright 2022 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -24,7 +24,6 @@ import "google/iam/v1/iam_policy.proto";
 import "google/iam/v1/policy.proto";
 import "google/longrunning/operations.proto";
 import "google/protobuf/empty.proto";
-import "google/protobuf/field_mask.proto";
 import "google/protobuf/timestamp.proto";
 import "google/spanner/admin/database/v1/backup.proto";
 import "google/spanner/admin/database/v1/common.proto";
@@ -216,6 +215,30 @@ service DatabaseAdmin {
     };
   }
 
+  // Starts copying a Cloud Spanner Backup.
+  // The returned backup [long-running operation][google.longrunning.Operation]
+  // will have a name of the format
+  // `projects/<project>/instances/<instance>/backups/<backup>/operations/<operation_id>`
+  // and can be used to track copying of the backup. The operation is associated
+  // with the destination backup.
+  // The [metadata][google.longrunning.Operation.metadata] field type is
+  // [CopyBackupMetadata][google.spanner.admin.database.v1.CopyBackupMetadata].
+  // The [response][google.longrunning.Operation.response] field type is
+  // [Backup][google.spanner.admin.database.v1.Backup], if successful. Cancelling the returned operation will stop the
+  // copying and delete the backup.
+  // Concurrent CopyBackup requests can run on the same source backup.
+  rpc CopyBackup(CopyBackupRequest) returns (google.longrunning.Operation) {
+    option (google.api.http) = {
+      post: "/v1/{parent=projects/*/instances/*}/backups:copy"
+      body: "*"
+    };
+    option (google.api.method_signature) = "parent,backup_id,source_backup,expire_time";
+    option (google.longrunning.operation_info) = {
+      response_type: "google.spanner.admin.database.v1.Backup"
+      metadata_type: "google.spanner.admin.database.v1.CopyBackupMetadata"
+    };
+  }
+
   // Gets metadata on a pending or completed [Backup][google.spanner.admin.database.v1.Backup].
   rpc GetBackup(GetBackupRequest) returns (Backup) {
     option (google.api.http) = {
@@ -645,6 +668,8 @@ message ListDatabaseOperationsRequest {
   //      for [RestoreDatabaseMetadata][google.spanner.admin.database.v1.RestoreDatabaseMetadata] is
   //      `type.googleapis.com/google.spanner.admin.database.v1.RestoreDatabaseMetadata`.
   //   * `metadata.<field_name>` - any field in metadata.value.
+  //      `metadata.@type` must be specified first, if filtering on metadata
+  //      fields.
   //   * `error` - Error associated with the long-running operation.
   //   * `response.@type` - the type of response.
   //   * `response.<field_name>` - any field in response.value.
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitResponseProto.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitResponseProto.java
index e093354a31b..8aa46a48cd7 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitResponseProto.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitResponseProto.java
@@ -45,26 +45,22 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
   static {
     java.lang.String[] descriptorData = {
       "\n\'google/spanner/v1/commit_response.prot"
-          + "o\022\021google.spanner.v1\032\034google/api/annotat"
-          + "ions.proto\032\036google/protobuf/duration.pro"
-          + "to\032\037google/protobuf/timestamp.proto\"\262\001\n\016"
-          + "CommitResponse\0224\n\020commit_timestamp\030\001 \001(\013"
-          + "2\032.google.protobuf.Timestamp\022C\n\014commit_s"
-          + "tats\030\002 \001(\0132-.google.spanner.v1.CommitRes"
-          + "ponse.CommitStats\032%\n\013CommitStats\022\026\n\016muta"
-          + "tion_count\030\001 \001(\003B\271\001\n\025com.google.spanner."
-          + "v1B\023CommitResponseProtoP\001Z8google.golang"
-          + ".org/genproto/googleapis/spanner/v1;span"
-          + "ner\252\002\027Google.Cloud.Spanner.V1\312\002\027Google\\C"
-          + "loud\\Spanner\\V1\352\002\032Google::Cloud::Spanner"
-          + "::V1b\006proto3"
+          + "o\022\021google.spanner.v1\032\037google/protobuf/ti"
+          + "mestamp.proto\"\262\001\n\016CommitResponse\0224\n\020comm"
+          + "it_timestamp\030\001 \001(\0132\032.google.protobuf.Tim"
+          + "estamp\022C\n\014commit_stats\030\002 \001(\0132-.google.sp"
+          + "anner.v1.CommitResponse.CommitStats\032%\n\013C"
+          + "ommitStats\022\026\n\016mutation_count\030\001 \001(\003B\271\001\n\025c"
+          + "om.google.spanner.v1B\023CommitResponseProt"
+          + "oP\001Z8google.golang.org/genproto/googleap"
+          + "is/spanner/v1;spanner\252\002\027Google.Cloud.Spa"
+          + "nner.V1\312\002\027Google\\Cloud\\Spanner\\V1\352\002\032Goog"
+          + "le::Cloud::Spanner::V1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
             descriptorData,
             new com.google.protobuf.Descriptors.FileDescriptor[] {
-              com.google.api.AnnotationsProto.getDescriptor(),
-              com.google.protobuf.DurationProto.getDescriptor(),
               com.google.protobuf.TimestampProto.getDescriptor(),
             });
     internal_static_google_spanner_v1_CommitResponse_descriptor =
@@ -83,8 +79,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
             new java.lang.String[] {
               "MutationCount",
             });
-    com.google.api.AnnotationsProto.getDescriptor();
-    com.google.protobuf.DurationProto.getDescriptor();
     com.google.protobuf.TimestampProto.getDescriptor();
   }
 
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeysProto.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeysProto.java
index 6c95c92573d..b79f3d8169b 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeysProto.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeysProto.java
@@ -45,28 +45,26 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
   static {
     java.lang.String[] descriptorData = {
       "\n\034google/spanner/v1/keys.proto\022\021google.s"
-          + "panner.v1\032\034google/api/annotations.proto\032"
-          + "\034google/protobuf/struct.proto\"\364\001\n\010KeyRan"
-          + "ge\0222\n\014start_closed\030\001 \001(\0132\032.google.protob"
-          + "uf.ListValueH\000\0220\n\nstart_open\030\002 \001(\0132\032.goo"
-          + "gle.protobuf.ListValueH\000\0220\n\nend_closed\030\003"
-          + " \001(\0132\032.google.protobuf.ListValueH\001\022.\n\010en"
-          + "d_open\030\004 \001(\0132\032.google.protobuf.ListValue"
-          + "H\001B\020\n\016start_key_typeB\016\n\014end_key_type\"l\n\006"
-          + "KeySet\022(\n\004keys\030\001 \003(\0132\032.google.protobuf.L"
-          + "istValue\022+\n\006ranges\030\002 \003(\0132\033.google.spanne"
-          + "r.v1.KeyRange\022\013\n\003all\030\003 \001(\010B\257\001\n\025com.googl"
-          + "e.spanner.v1B\tKeysProtoP\001Z8google.golang"
-          + ".org/genproto/googleapis/spanner/v1;span"
-          + "ner\252\002\027Google.Cloud.Spanner.V1\312\002\027Google\\C"
-          + "loud\\Spanner\\V1\352\002\032Google::Cloud::Spanner"
-          + "::V1b\006proto3"
+          + "panner.v1\032\034google/protobuf/struct.proto\""
+          + "\364\001\n\010KeyRange\0222\n\014start_closed\030\001 \001(\0132\032.goo"
+          + "gle.protobuf.ListValueH\000\0220\n\nstart_open\030\002"
+          + " \001(\0132\032.google.protobuf.ListValueH\000\0220\n\nen"
+          + "d_closed\030\003 \001(\0132\032.google.protobuf.ListVal"
+          + "ueH\001\022.\n\010end_open\030\004 \001(\0132\032.google.protobuf"
+          + ".ListValueH\001B\020\n\016start_key_typeB\016\n\014end_ke"
+          + "y_type\"l\n\006KeySet\022(\n\004keys\030\001 \003(\0132\032.google."
+          + "protobuf.ListValue\022+\n\006ranges\030\002 \003(\0132\033.goo"
+          + "gle.spanner.v1.KeyRange\022\013\n\003all\030\003 \001(\010B\257\001\n"
+          + "\025com.google.spanner.v1B\tKeysProtoP\001Z8goo"
+          + "gle.golang.org/genproto/googleapis/spann"
+          + "er/v1;spanner\252\002\027Google.Cloud.Spanner.V1\312"
+          + "\002\027Google\\Cloud\\Spanner\\V1\352\002\032Google::Clou"
+          + "d::Spanner::V1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
             descriptorData,
             new com.google.protobuf.Descriptors.FileDescriptor[] {
-              com.google.api.AnnotationsProto.getDescriptor(),
               com.google.protobuf.StructProto.getDescriptor(),
             });
     internal_static_google_spanner_v1_KeyRange_descriptor =
@@ -84,7 +82,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
             new java.lang.String[] {
               "Keys", "Ranges", "All",
             });
-    com.google.api.AnnotationsProto.getDescriptor();
     com.google.protobuf.StructProto.getDescriptor();
   }
 
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/MutationProto.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/MutationProto.java
index faf23ffff0a..1c10bfaa9ca 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/MutationProto.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/MutationProto.java
@@ -49,32 +49,31 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
   static {
     java.lang.String[] descriptorData = {
       "\n google/spanner/v1/mutation.proto\022\021goog"
-          + "le.spanner.v1\032\034google/api/annotations.pr"
-          + "oto\032\037google/api/field_behavior.proto\032\034go"
-          + "ogle/protobuf/struct.proto\032\034google/spann"
-          + "er/v1/keys.proto\"\325\003\n\010Mutation\0223\n\006insert\030"
-          + "\001 \001(\0132!.google.spanner.v1.Mutation.Write"
-          + "H\000\0223\n\006update\030\002 \001(\0132!.google.spanner.v1.M"
-          + "utation.WriteH\000\022=\n\020insert_or_update\030\003 \001("
-          + "\0132!.google.spanner.v1.Mutation.WriteH\000\0224"
-          + "\n\007replace\030\004 \001(\0132!.google.spanner.v1.Muta"
-          + "tion.WriteH\000\0224\n\006delete\030\005 \001(\0132\".google.sp"
-          + "anner.v1.Mutation.DeleteH\000\032X\n\005Write\022\022\n\005t"
-          + "able\030\001 \001(\tB\003\340A\002\022\017\n\007columns\030\002 \003(\t\022*\n\006valu"
-          + "es\030\003 \003(\0132\032.google.protobuf.ListValue\032M\n\006"
-          + "Delete\022\022\n\005table\030\001 \001(\tB\003\340A\002\022/\n\007key_set\030\002 "
-          + "\001(\0132\031.google.spanner.v1.KeySetB\003\340A\002B\013\n\to"
-          + "perationB\263\001\n\025com.google.spanner.v1B\rMuta"
-          + "tionProtoP\001Z8google.golang.org/genproto/"
-          + "googleapis/spanner/v1;spanner\252\002\027Google.C"
-          + "loud.Spanner.V1\312\002\027Google\\Cloud\\Spanner\\V"
-          + "1\352\002\032Google::Cloud::Spanner::V1b\006proto3"
+          + "le.spanner.v1\032\037google/api/field_behavior"
+          + ".proto\032\034google/protobuf/struct.proto\032\034go"
+          + "ogle/spanner/v1/keys.proto\"\325\003\n\010Mutation\022"
+          + "3\n\006insert\030\001 \001(\0132!.google.spanner.v1.Muta"
+          + "tion.WriteH\000\0223\n\006update\030\002 \001(\0132!.google.sp"
+          + "anner.v1.Mutation.WriteH\000\022=\n\020insert_or_u"
+          + "pdate\030\003 \001(\0132!.google.spanner.v1.Mutation"
+          + ".WriteH\000\0224\n\007replace\030\004 \001(\0132!.google.spann"
+          + "er.v1.Mutation.WriteH\000\0224\n\006delete\030\005 \001(\0132\""
+          + ".google.spanner.v1.Mutation.DeleteH\000\032X\n\005"
+          + "Write\022\022\n\005table\030\001 \001(\tB\003\340A\002\022\017\n\007columns\030\002 \003"
+          + "(\t\022*\n\006values\030\003 \003(\0132\032.google.protobuf.Lis"
+          + "tValue\032M\n\006Delete\022\022\n\005table\030\001 \001(\tB\003\340A\002\022/\n\007"
+          + "key_set\030\002 \001(\0132\031.google.spanner.v1.KeySet"
+          + "B\003\340A\002B\013\n\toperationB\263\001\n\025com.google.spanne"
+          + "r.v1B\rMutationProtoP\001Z8google.golang.org"
+          + "/genproto/googleapis/spanner/v1;spanner\252"
+          + "\002\027Google.Cloud.Spanner.V1\312\002\027Google\\Cloud"
+          + "\\Spanner\\V1\352\002\032Google::Cloud::Spanner::V1"
+          + "b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
             descriptorData,
             new com.google.protobuf.Descriptors.FileDescriptor[] {
-              com.google.api.AnnotationsProto.getDescriptor(),
               com.google.api.FieldBehaviorProto.getDescriptor(),
               com.google.protobuf.StructProto.getDescriptor(),
               com.google.spanner.v1.KeysProto.getDescriptor(),
@@ -108,7 +107,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     registry.add(com.google.api.FieldBehaviorProto.fieldBehavior);
     com.google.protobuf.Descriptors.FileDescriptor.internalUpdateFileDescriptor(
         descriptor, registry);
-    com.google.api.AnnotationsProto.getDescriptor();
     com.google.api.FieldBehaviorProto.getDescriptor();
     com.google.protobuf.StructProto.getDescriptor();
     com.google.spanner.v1.KeysProto.getDescriptor();
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/QueryPlanProto.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/QueryPlanProto.java
index 0a9d2b3583d..21cc5708fbc 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/QueryPlanProto.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/QueryPlanProto.java
@@ -57,37 +57,35 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
   static {
     java.lang.String[] descriptorData = {
       "\n\"google/spanner/v1/query_plan.proto\022\021go"
-          + "ogle.spanner.v1\032\034google/api/annotations."
-          + "proto\032\034google/protobuf/struct.proto\"\370\004\n\010"
-          + "PlanNode\022\r\n\005index\030\001 \001(\005\022.\n\004kind\030\002 \001(\0162 ."
-          + "google.spanner.v1.PlanNode.Kind\022\024\n\014displ"
-          + "ay_name\030\003 \001(\t\022:\n\013child_links\030\004 \003(\0132%.goo"
-          + "gle.spanner.v1.PlanNode.ChildLink\022M\n\024sho"
-          + "rt_representation\030\005 \001(\0132/.google.spanner"
-          + ".v1.PlanNode.ShortRepresentation\022)\n\010meta"
-          + "data\030\006 \001(\0132\027.google.protobuf.Struct\0220\n\017e"
-          + "xecution_stats\030\007 \001(\0132\027.google.protobuf.S"
-          + "truct\032@\n\tChildLink\022\023\n\013child_index\030\001 \001(\005\022"
-          + "\014\n\004type\030\002 \001(\t\022\020\n\010variable\030\003 \001(\t\032\262\001\n\023Shor"
-          + "tRepresentation\022\023\n\013description\030\001 \001(\t\022S\n\n"
-          + "subqueries\030\002 \003(\0132?.google.spanner.v1.Pla"
-          + "nNode.ShortRepresentation.SubqueriesEntr"
-          + "y\0321\n\017SubqueriesEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005val"
-          + "ue\030\002 \001(\005:\0028\001\"8\n\004Kind\022\024\n\020KIND_UNSPECIFIED"
-          + "\020\000\022\016\n\nRELATIONAL\020\001\022\n\n\006SCALAR\020\002\"<\n\tQueryP"
-          + "lan\022/\n\nplan_nodes\030\001 \003(\0132\033.google.spanner"
-          + ".v1.PlanNodeB\264\001\n\025com.google.spanner.v1B\016"
-          + "QueryPlanProtoP\001Z8google.golang.org/genp"
-          + "roto/googleapis/spanner/v1;spanner\252\002\027Goo"
-          + "gle.Cloud.Spanner.V1\312\002\027Google\\Cloud\\Span"
-          + "ner\\V1\352\002\032Google::Cloud::Spanner::V1b\006pro"
-          + "to3"
+          + "ogle.spanner.v1\032\034google/protobuf/struct."
+          + "proto\"\370\004\n\010PlanNode\022\r\n\005index\030\001 \001(\005\022.\n\004kin"
+          + "d\030\002 \001(\0162 .google.spanner.v1.PlanNode.Kin"
+          + "d\022\024\n\014display_name\030\003 \001(\t\022:\n\013child_links\030\004"
+          + " \003(\0132%.google.spanner.v1.PlanNode.ChildL"
+          + "ink\022M\n\024short_representation\030\005 \001(\0132/.goog"
+          + "le.spanner.v1.PlanNode.ShortRepresentati"
+          + "on\022)\n\010metadata\030\006 \001(\0132\027.google.protobuf.S"
+          + "truct\0220\n\017execution_stats\030\007 \001(\0132\027.google."
+          + "protobuf.Struct\032@\n\tChildLink\022\023\n\013child_in"
+          + "dex\030\001 \001(\005\022\014\n\004type\030\002 \001(\t\022\020\n\010variable\030\003 \001("
+          + "\t\032\262\001\n\023ShortRepresentation\022\023\n\013description"
+          + "\030\001 \001(\t\022S\n\nsubqueries\030\002 \003(\0132?.google.span"
+          + "ner.v1.PlanNode.ShortRepresentation.Subq"
+          + "ueriesEntry\0321\n\017SubqueriesEntry\022\013\n\003key\030\001 "
+          + "\001(\t\022\r\n\005value\030\002 \001(\005:\0028\001\"8\n\004Kind\022\024\n\020KIND_U"
+          + "NSPECIFIED\020\000\022\016\n\nRELATIONAL\020\001\022\n\n\006SCALAR\020\002"
+          + "\"<\n\tQueryPlan\022/\n\nplan_nodes\030\001 \003(\0132\033.goog"
+          + "le.spanner.v1.PlanNodeB\264\001\n\025com.google.sp"
+          + "anner.v1B\016QueryPlanProtoP\001Z8google.golan"
+          + "g.org/genproto/googleapis/spanner/v1;spa"
+          + "nner\252\002\027Google.Cloud.Spanner.V1\312\002\027Google\\"
+          + "Cloud\\Spanner\\V1\352\002\032Google::Cloud::Spanne"
+          + "r::V1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
             descriptorData,
             new com.google.protobuf.Descriptors.FileDescriptor[] {
-              com.google.api.AnnotationsProto.getDescriptor(),
               com.google.protobuf.StructProto.getDescriptor(),
             });
     internal_static_google_spanner_v1_PlanNode_descriptor =
@@ -138,7 +136,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
             new java.lang.String[] {
               "PlanNodes",
             });
-    com.google.api.AnnotationsProto.getDescriptor();
     com.google.protobuf.StructProto.getDescriptor();
   }
 
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetProto.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetProto.java
index e6b22d02d80..a5744a50a1f 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetProto.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetProto.java
@@ -53,40 +53,38 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
   static {
     java.lang.String[] descriptorData = {
       "\n\"google/spanner/v1/result_set.proto\022\021go"
-          + "ogle.spanner.v1\032\034google/api/annotations."
-          + "proto\032\034google/protobuf/struct.proto\032\'goo"
-          + "gle/spanner/v1/commit_response.proto\032\"go"
-          + "ogle/spanner/v1/query_plan.proto\032#google"
-          + "/spanner/v1/transaction.proto\032\034google/sp"
-          + "anner/v1/type.proto\"\237\001\n\tResultSet\0226\n\010met"
-          + "adata\030\001 \001(\0132$.google.spanner.v1.ResultSe"
-          + "tMetadata\022(\n\004rows\030\002 \003(\0132\032.google.protobu"
-          + "f.ListValue\0220\n\005stats\030\003 \001(\0132!.google.span"
-          + "ner.v1.ResultSetStats\"\321\001\n\020PartialResultS"
-          + "et\0226\n\010metadata\030\001 \001(\0132$.google.spanner.v1"
-          + ".ResultSetMetadata\022&\n\006values\030\002 \003(\0132\026.goo"
-          + "gle.protobuf.Value\022\025\n\rchunked_value\030\003 \001("
-          + "\010\022\024\n\014resume_token\030\004 \001(\014\0220\n\005stats\030\005 \001(\0132!"
-          + ".google.spanner.v1.ResultSetStats\"y\n\021Res"
-          + "ultSetMetadata\022/\n\010row_type\030\001 \001(\0132\035.googl"
-          + "e.spanner.v1.StructType\0223\n\013transaction\030\002"
-          + " \001(\0132\036.google.spanner.v1.Transaction\"\271\001\n"
-          + "\016ResultSetStats\0220\n\nquery_plan\030\001 \001(\0132\034.go"
-          + "ogle.spanner.v1.QueryPlan\022,\n\013query_stats"
-          + "\030\002 \001(\0132\027.google.protobuf.Struct\022\031\n\017row_c"
-          + "ount_exact\030\003 \001(\003H\000\022\037\n\025row_count_lower_bo"
-          + "und\030\004 \001(\003H\000B\013\n\trow_countB\267\001\n\025com.google."
-          + "spanner.v1B\016ResultSetProtoP\001Z8google.gol"
-          + "ang.org/genproto/googleapis/spanner/v1;s"
-          + "panner\370\001\001\252\002\027Google.Cloud.Spanner.V1\312\002\027Go"
-          + "ogle\\Cloud\\Spanner\\V1\352\002\032Google::Cloud::S"
-          + "panner::V1b\006proto3"
+          + "ogle.spanner.v1\032\034google/protobuf/struct."
+          + "proto\032\'google/spanner/v1/commit_response"
+          + ".proto\032\"google/spanner/v1/query_plan.pro"
+          + "to\032#google/spanner/v1/transaction.proto\032"
+          + "\034google/spanner/v1/type.proto\"\237\001\n\tResult"
+          + "Set\0226\n\010metadata\030\001 \001(\0132$.google.spanner.v"
+          + "1.ResultSetMetadata\022(\n\004rows\030\002 \003(\0132\032.goog"
+          + "le.protobuf.ListValue\0220\n\005stats\030\003 \001(\0132!.g"
+          + "oogle.spanner.v1.ResultSetStats\"\321\001\n\020Part"
+          + "ialResultSet\0226\n\010metadata\030\001 \001(\0132$.google."
+          + "spanner.v1.ResultSetMetadata\022&\n\006values\030\002"
+          + " \003(\0132\026.google.protobuf.Value\022\025\n\rchunked_"
+          + "value\030\003 \001(\010\022\024\n\014resume_token\030\004 \001(\014\0220\n\005sta"
+          + "ts\030\005 \001(\0132!.google.spanner.v1.ResultSetSt"
+          + "ats\"y\n\021ResultSetMetadata\022/\n\010row_type\030\001 \001"
+          + "(\0132\035.google.spanner.v1.StructType\0223\n\013tra"
+          + "nsaction\030\002 \001(\0132\036.google.spanner.v1.Trans"
+          + "action\"\271\001\n\016ResultSetStats\0220\n\nquery_plan\030"
+          + "\001 \001(\0132\034.google.spanner.v1.QueryPlan\022,\n\013q"
+          + "uery_stats\030\002 \001(\0132\027.google.protobuf.Struc"
+          + "t\022\031\n\017row_count_exact\030\003 \001(\003H\000\022\037\n\025row_coun"
+          + "t_lower_bound\030\004 \001(\003H\000B\013\n\trow_countB\267\001\n\025c"
+          + "om.google.spanner.v1B\016ResultSetProtoP\001Z8"
+          + "google.golang.org/genproto/googleapis/sp"
+          + "anner/v1;spanner\370\001\001\252\002\027Google.Cloud.Spann"
+          + "er.V1\312\002\027Google\\Cloud\\Spanner\\V1\352\002\032Google"
+          + "::Cloud::Spanner::V1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
             descriptorData,
             new com.google.protobuf.Descriptors.FileDescriptor[] {
-              com.google.api.AnnotationsProto.getDescriptor(),
               com.google.protobuf.StructProto.getDescriptor(),
               com.google.spanner.v1.CommitResponseProto.getDescriptor(),
               com.google.spanner.v1.QueryPlanProto.getDescriptor(),
@@ -125,7 +123,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
             new java.lang.String[] {
               "QueryPlan", "QueryStats", "RowCountExact", "RowCountLowerBound", "RowCount",
             });
-    com.google.api.AnnotationsProto.getDescriptor();
     com.google.protobuf.StructProto.getDescriptor();
     com.google.spanner.v1.CommitResponseProto.getDescriptor();
     com.google.spanner.v1.QueryPlanProto.getDescriptor();
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionProto.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionProto.java
index 2655d8e0fb4..4ce4f322c00 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionProto.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionProto.java
@@ -61,41 +61,39 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
   static {
     java.lang.String[] descriptorData = {
       "\n#google/spanner/v1/transaction.proto\022\021g"
-          + "oogle.spanner.v1\032\034google/api/annotations"
-          + ".proto\032\036google/protobuf/duration.proto\032\037"
-          + "google/protobuf/timestamp.proto\"\303\004\n\022Tran"
-          + "sactionOptions\022E\n\nread_write\030\001 \001(\0132/.goo"
-          + "gle.spanner.v1.TransactionOptions.ReadWr"
-          + "iteH\000\022O\n\017partitioned_dml\030\003 \001(\01324.google."
-          + "spanner.v1.TransactionOptions.Partitione"
-          + "dDmlH\000\022C\n\tread_only\030\002 \001(\0132..google.spann"
-          + "er.v1.TransactionOptions.ReadOnlyH\000\032\013\n\tR"
-          + "eadWrite\032\020\n\016PartitionedDml\032\250\002\n\010ReadOnly\022"
-          + "\020\n\006strong\030\001 \001(\010H\000\0228\n\022min_read_timestamp\030"
-          + "\002 \001(\0132\032.google.protobuf.TimestampH\000\0222\n\rm"
-          + "ax_staleness\030\003 \001(\0132\031.google.protobuf.Dur"
-          + "ationH\000\0224\n\016read_timestamp\030\004 \001(\0132\032.google"
-          + ".protobuf.TimestampH\000\0224\n\017exact_staleness"
-          + "\030\005 \001(\0132\031.google.protobuf.DurationH\000\022\035\n\025r"
-          + "eturn_read_timestamp\030\006 \001(\010B\021\n\017timestamp_"
-          + "boundB\006\n\004mode\"M\n\013Transaction\022\n\n\002id\030\001 \001(\014"
-          + "\0222\n\016read_timestamp\030\002 \001(\0132\032.google.protob"
-          + "uf.Timestamp\"\244\001\n\023TransactionSelector\022;\n\n"
-          + "single_use\030\001 \001(\0132%.google.spanner.v1.Tra"
-          + "nsactionOptionsH\000\022\014\n\002id\030\002 \001(\014H\000\0226\n\005begin"
-          + "\030\003 \001(\0132%.google.spanner.v1.TransactionOp"
-          + "tionsH\000B\n\n\010selectorB\266\001\n\025com.google.spann"
-          + "er.v1B\020TransactionProtoP\001Z8google.golang"
-          + ".org/genproto/googleapis/spanner/v1;span"
-          + "ner\252\002\027Google.Cloud.Spanner.V1\312\002\027Google\\C"
-          + "loud\\Spanner\\V1\352\002\032Google::Cloud::Spanner"
-          + "::V1b\006proto3"
+          + "oogle.spanner.v1\032\036google/protobuf/durati"
+          + "on.proto\032\037google/protobuf/timestamp.prot"
+          + "o\"\303\004\n\022TransactionOptions\022E\n\nread_write\030\001"
+          + " \001(\0132/.google.spanner.v1.TransactionOpti"
+          + "ons.ReadWriteH\000\022O\n\017partitioned_dml\030\003 \001(\013"
+          + "24.google.spanner.v1.TransactionOptions."
+          + "PartitionedDmlH\000\022C\n\tread_only\030\002 \001(\0132..go"
+          + "ogle.spanner.v1.TransactionOptions.ReadO"
+          + "nlyH\000\032\013\n\tReadWrite\032\020\n\016PartitionedDml\032\250\002\n"
+          + "\010ReadOnly\022\020\n\006strong\030\001 \001(\010H\000\0228\n\022min_read_"
+          + "timestamp\030\002 \001(\0132\032.google.protobuf.Timest"
+          + "ampH\000\0222\n\rmax_staleness\030\003 \001(\0132\031.google.pr"
+          + "otobuf.DurationH\000\0224\n\016read_timestamp\030\004 \001("
+          + "\0132\032.google.protobuf.TimestampH\000\0224\n\017exact"
+          + "_staleness\030\005 \001(\0132\031.google.protobuf.Durat"
+          + "ionH\000\022\035\n\025return_read_timestamp\030\006 \001(\010B\021\n\017"
+          + "timestamp_boundB\006\n\004mode\"M\n\013Transaction\022\n"
+          + "\n\002id\030\001 \001(\014\0222\n\016read_timestamp\030\002 \001(\0132\032.goo"
+          + "gle.protobuf.Timestamp\"\244\001\n\023TransactionSe"
+          + "lector\022;\n\nsingle_use\030\001 \001(\0132%.google.span"
+          + "ner.v1.TransactionOptionsH\000\022\014\n\002id\030\002 \001(\014H"
+          + "\000\0226\n\005begin\030\003 \001(\0132%.google.spanner.v1.Tra"
+          + "nsactionOptionsH\000B\n\n\010selectorB\266\001\n\025com.go"
+          + "ogle.spanner.v1B\020TransactionProtoP\001Z8goo"
+          + "gle.golang.org/genproto/googleapis/spann"
+          + "er/v1;spanner\252\002\027Google.Cloud.Spanner.V1\312"
+          + "\002\027Google\\Cloud\\Spanner\\V1\352\002\032Google::Clou"
+          + "d::Spanner::V1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
             descriptorData,
             new com.google.protobuf.Descriptors.FileDescriptor[] {
-              com.google.api.AnnotationsProto.getDescriptor(),
               com.google.protobuf.DurationProto.getDescriptor(),
               com.google.protobuf.TimestampProto.getDescriptor(),
             });
@@ -149,7 +147,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
             new java.lang.String[] {
               "SingleUse", "Id", "Begin", "Selector",
             });
-    com.google.api.AnnotationsProto.getDescriptor();
     com.google.protobuf.DurationProto.getDescriptor();
     com.google.protobuf.TimestampProto.getDescriptor();
   }
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TypeProto.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TypeProto.java
index d0e7dd0f0cc..29e9151b325 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TypeProto.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TypeProto.java
@@ -49,34 +49,32 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
   static {
     java.lang.String[] descriptorData = {
       "\n\034google/spanner/v1/type.proto\022\021google.s"
-          + "panner.v1\032\034google/api/annotations.proto\032"
-          + "\037google/api/field_behavior.proto\"\337\001\n\004Typ"
-          + "e\022.\n\004code\030\001 \001(\0162\033.google.spanner.v1.Type"
-          + "CodeB\003\340A\002\0223\n\022array_element_type\030\002 \001(\0132\027."
-          + "google.spanner.v1.Type\0222\n\013struct_type\030\003 "
-          + "\001(\0132\035.google.spanner.v1.StructType\022>\n\017ty"
-          + "pe_annotation\030\004 \001(\0162%.google.spanner.v1."
-          + "TypeAnnotationCode\"\177\n\nStructType\0223\n\006fiel"
-          + "ds\030\001 \003(\0132#.google.spanner.v1.StructType."
-          + "Field\032<\n\005Field\022\014\n\004name\030\001 \001(\t\022%\n\004type\030\002 \001"
-          + "(\0132\027.google.spanner.v1.Type*\245\001\n\010TypeCode"
-          + "\022\031\n\025TYPE_CODE_UNSPECIFIED\020\000\022\010\n\004BOOL\020\001\022\t\n"
-          + "\005INT64\020\002\022\013\n\007FLOAT64\020\003\022\r\n\tTIMESTAMP\020\004\022\010\n\004"
-          + "DATE\020\005\022\n\n\006STRING\020\006\022\t\n\005BYTES\020\007\022\t\n\005ARRAY\020\010"
-          + "\022\n\n\006STRUCT\020\t\022\013\n\007NUMERIC\020\n\022\010\n\004JSON\020\013*J\n\022T"
-          + "ypeAnnotationCode\022$\n TYPE_ANNOTATION_COD"
-          + "E_UNSPECIFIED\020\000\022\016\n\nPG_NUMERIC\020\002B\257\001\n\025com."
-          + "google.spanner.v1B\tTypeProtoP\001Z8google.g"
-          + "olang.org/genproto/googleapis/spanner/v1"
-          + ";spanner\252\002\027Google.Cloud.Spanner.V1\312\002\027Goo"
-          + "gle\\Cloud\\Spanner\\V1\352\002\032Google::Cloud::Sp"
-          + "anner::V1b\006proto3"
+          + "panner.v1\032\037google/api/field_behavior.pro"
+          + "to\"\337\001\n\004Type\022.\n\004code\030\001 \001(\0162\033.google.spann"
+          + "er.v1.TypeCodeB\003\340A\002\0223\n\022array_element_typ"
+          + "e\030\002 \001(\0132\027.google.spanner.v1.Type\0222\n\013stru"
+          + "ct_type\030\003 \001(\0132\035.google.spanner.v1.Struct"
+          + "Type\022>\n\017type_annotation\030\004 \001(\0162%.google.s"
+          + "panner.v1.TypeAnnotationCode\"\177\n\nStructTy"
+          + "pe\0223\n\006fields\030\001 \003(\0132#.google.spanner.v1.S"
+          + "tructType.Field\032<\n\005Field\022\014\n\004name\030\001 \001(\t\022%"
+          + "\n\004type\030\002 \001(\0132\027.google.spanner.v1.Type*\245\001"
+          + "\n\010TypeCode\022\031\n\025TYPE_CODE_UNSPECIFIED\020\000\022\010\n"
+          + "\004BOOL\020\001\022\t\n\005INT64\020\002\022\013\n\007FLOAT64\020\003\022\r\n\tTIMES"
+          + "TAMP\020\004\022\010\n\004DATE\020\005\022\n\n\006STRING\020\006\022\t\n\005BYTES\020\007\022"
+          + "\t\n\005ARRAY\020\010\022\n\n\006STRUCT\020\t\022\013\n\007NUMERIC\020\n\022\010\n\004J"
+          + "SON\020\013*J\n\022TypeAnnotationCode\022$\n TYPE_ANNO"
+          + "TATION_CODE_UNSPECIFIED\020\000\022\016\n\nPG_NUMERIC\020"
+          + "\002B\257\001\n\025com.google.spanner.v1B\tTypeProtoP\001"
+          + "Z8google.golang.org/genproto/googleapis/"
+          + "spanner/v1;spanner\252\002\027Google.Cloud.Spanne"
+          + "r.V1\312\002\027Google\\Cloud\\Spanner\\V1\352\002\032Google:"
+          + ":Cloud::Spanner::V1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
             descriptorData,
             new com.google.protobuf.Descriptors.FileDescriptor[] {
-              com.google.api.AnnotationsProto.getDescriptor(),
               com.google.api.FieldBehaviorProto.getDescriptor(),
             });
     internal_static_google_spanner_v1_Type_descriptor = getDescriptor().getMessageTypes().get(0);
@@ -107,7 +105,6 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     registry.add(com.google.api.FieldBehaviorProto.fieldBehavior);
     com.google.protobuf.Descriptors.FileDescriptor.internalUpdateFileDescriptor(
         descriptor, registry);
-    com.google.api.AnnotationsProto.getDescriptor();
     com.google.api.FieldBehaviorProto.getDescriptor();
   }
 
diff --git a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/commit_response.proto b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/commit_response.proto
index 4850600f0ef..d43a83a3206 100644
--- a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/commit_response.proto
+++ b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/commit_response.proto
@@ -16,8 +16,6 @@ syntax = "proto3";
 
 package google.spanner.v1;
 
-import "google/api/annotations.proto";
-import "google/protobuf/duration.proto";
 import "google/protobuf/timestamp.proto";
 
 option csharp_namespace = "Google.Cloud.Spanner.V1";
diff --git a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/keys.proto b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/keys.proto
index ddcd181266e..12495a616ab 100644
--- a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/keys.proto
+++ b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/keys.proto
@@ -16,7 +16,6 @@ syntax = "proto3";
 
 package google.spanner.v1;
 
-import "google/api/annotations.proto";
 import "google/protobuf/struct.proto";
 
 option csharp_namespace = "Google.Cloud.Spanner.V1";
diff --git a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/mutation.proto b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/mutation.proto
index f4b722cc12e..ef7e75f8dc8 100644
--- a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/mutation.proto
+++ b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/mutation.proto
@@ -16,7 +16,6 @@ syntax = "proto3";
 
 package google.spanner.v1;
 
-import "google/api/annotations.proto";
 import "google/api/field_behavior.proto";
 import "google/protobuf/struct.proto";
 import "google/spanner/v1/keys.proto";
diff --git a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/query_plan.proto b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/query_plan.proto
index 690c36ea92b..f700014e283 100644
--- a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/query_plan.proto
+++ b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/query_plan.proto
@@ -16,7 +16,6 @@ syntax = "proto3";
 
 package google.spanner.v1;
 
-import "google/api/annotations.proto";
 import "google/protobuf/struct.proto";
 
 option csharp_namespace = "Google.Cloud.Spanner.V1";
diff --git a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/result_set.proto b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/result_set.proto
index d6ba978de2b..89dfa234653 100644
--- a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/result_set.proto
+++ b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/result_set.proto
@@ -16,7 +16,6 @@ syntax = "proto3";
 
 package google.spanner.v1;
 
-import "google/api/annotations.proto";
 import "google/protobuf/struct.proto";
 import "google/spanner/v1/commit_response.proto";
 import "google/spanner/v1/query_plan.proto";
diff --git a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/transaction.proto b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/transaction.proto
index debc226e32b..1e4c655ee2c 100644
--- a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/transaction.proto
+++ b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/transaction.proto
@@ -16,7 +16,6 @@ syntax = "proto3";
 
 package google.spanner.v1;
 
-import "google/api/annotations.proto";
 import "google/protobuf/duration.proto";
 import "google/protobuf/timestamp.proto";
 
diff --git a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/type.proto b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/type.proto
index f88e7b251df..3d28c331300 100644
--- a/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/type.proto
+++ b/proto-google-cloud-spanner-v1/src/main/proto/google/spanner/v1/type.proto
@@ -16,7 +16,6 @@ syntax = "proto3";
 
 package google.spanner.v1;
 
-import "google/api/annotations.proto";
 import "google/api/field_behavior.proto";
 
 option csharp_namespace = "Google.Cloud.Spanner.V1";