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 d8110bd947c..8bb5d30f817 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
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -88,6 +88,8 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
  *   DatabaseName name = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
  *   Database response = databaseAdminClient.getDatabase(name);
@@ -123,6 +125,8 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * DatabaseAdminSettings databaseAdminSettings =
  *     DatabaseAdminSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -133,6 +137,8 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * DatabaseAdminSettings databaseAdminSettings =
  *     DatabaseAdminSettings.newBuilder().setEndpoint(myEndpoint).build();
  * DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create(databaseAdminSettings);
@@ -211,6 +217,8 @@ public final OperationsClient getOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   for (Database element : databaseAdminClient.listDatabases(parent).iterateAll()) {
@@ -238,6 +246,8 @@ public final ListDatabasesPagedResponse listDatabases(InstanceName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   for (Database element : databaseAdminClient.listDatabases(parent).iterateAll()) {
@@ -262,6 +272,8 @@ public final ListDatabasesPagedResponse listDatabases(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListDatabasesRequest request =
    *       ListDatabasesRequest.newBuilder()
@@ -289,6 +301,8 @@ public final ListDatabasesPagedResponse listDatabases(ListDatabasesRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListDatabasesRequest request =
    *       ListDatabasesRequest.newBuilder()
@@ -317,6 +331,8 @@ public final ListDatabasesPagedResponse listDatabases(ListDatabasesRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListDatabasesRequest request =
    *       ListDatabasesRequest.newBuilder()
@@ -356,6 +372,8 @@ public final UnaryCallable<ListDatabasesRequest, ListDatabasesResponse> listData
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   String createStatement = "createStatement744686547";
@@ -395,6 +413,8 @@ public final OperationFuture<Database, CreateDatabaseMetadata> createDatabaseAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   String createStatement = "createStatement744686547";
@@ -434,6 +454,8 @@ public final OperationFuture<Database, CreateDatabaseMetadata> createDatabaseAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   CreateDatabaseRequest request =
    *       CreateDatabaseRequest.newBuilder()
@@ -468,6 +490,8 @@ public final OperationFuture<Database, CreateDatabaseMetadata> createDatabaseAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   CreateDatabaseRequest request =
    *       CreateDatabaseRequest.newBuilder()
@@ -502,6 +526,8 @@ public final OperationFuture<Database, CreateDatabaseMetadata> createDatabaseAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   CreateDatabaseRequest request =
    *       CreateDatabaseRequest.newBuilder()
@@ -529,6 +555,8 @@ public final UnaryCallable<CreateDatabaseRequest, Operation> createDatabaseCalla
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   DatabaseName name = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
    *   Database response = databaseAdminClient.getDatabase(name);
@@ -552,6 +580,8 @@ public final Database getDatabase(DatabaseName name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String name = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString();
    *   Database response = databaseAdminClient.getDatabase(name);
@@ -574,6 +604,8 @@ public final Database getDatabase(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   GetDatabaseRequest request =
    *       GetDatabaseRequest.newBuilder()
@@ -597,6 +629,8 @@ public final Database getDatabase(GetDatabaseRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   GetDatabaseRequest request =
    *       GetDatabaseRequest.newBuilder()
@@ -625,6 +659,8 @@ public final UnaryCallable<GetDatabaseRequest, Database> getDatabaseCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   DatabaseName database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
    *   List<String> statements = new ArrayList<>();
@@ -659,6 +695,8 @@ public final OperationFuture<Empty, UpdateDatabaseDdlMetadata> updateDatabaseDdl
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString();
    *   List<String> statements = new ArrayList<>();
@@ -693,6 +731,8 @@ public final OperationFuture<Empty, UpdateDatabaseDdlMetadata> updateDatabaseDdl
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   UpdateDatabaseDdlRequest request =
    *       UpdateDatabaseDdlRequest.newBuilder()
@@ -725,6 +765,8 @@ public final OperationFuture<Empty, UpdateDatabaseDdlMetadata> updateDatabaseDdl
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   UpdateDatabaseDdlRequest request =
    *       UpdateDatabaseDdlRequest.newBuilder()
@@ -757,6 +799,8 @@ public final OperationFuture<Empty, UpdateDatabaseDdlMetadata> updateDatabaseDdl
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   UpdateDatabaseDdlRequest request =
    *       UpdateDatabaseDdlRequest.newBuilder()
@@ -784,6 +828,8 @@ public final UnaryCallable<UpdateDatabaseDdlRequest, Operation> updateDatabaseDd
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   DatabaseName database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
    *   databaseAdminClient.dropDatabase(database);
@@ -810,6 +856,8 @@ public final void dropDatabase(DatabaseName database) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString();
    *   databaseAdminClient.dropDatabase(database);
@@ -833,6 +881,8 @@ public final void dropDatabase(String database) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   DropDatabaseRequest request =
    *       DropDatabaseRequest.newBuilder()
@@ -858,6 +908,8 @@ public final void dropDatabase(DropDatabaseRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   DropDatabaseRequest request =
    *       DropDatabaseRequest.newBuilder()
@@ -882,6 +934,8 @@ public final UnaryCallable<DropDatabaseRequest, Empty> dropDatabaseCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   DatabaseName database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
    *   GetDatabaseDdlResponse response = databaseAdminClient.getDatabaseDdl(database);
@@ -909,6 +963,8 @@ public final GetDatabaseDdlResponse getDatabaseDdl(DatabaseName database) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString();
    *   GetDatabaseDdlResponse response = databaseAdminClient.getDatabaseDdl(database);
@@ -934,6 +990,8 @@ public final GetDatabaseDdlResponse getDatabaseDdl(String database) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   GetDatabaseDdlRequest request =
    *       GetDatabaseDdlRequest.newBuilder()
@@ -959,6 +1017,8 @@ public final GetDatabaseDdlResponse getDatabaseDdl(GetDatabaseDdlRequest request
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   GetDatabaseDdlRequest request =
    *       GetDatabaseDdlRequest.newBuilder()
@@ -988,6 +1048,8 @@ public final GetDatabaseDdlResponse getDatabaseDdl(GetDatabaseDdlRequest request
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ResourceName resource = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
    *   Policy policy = Policy.newBuilder().build();
@@ -1023,6 +1085,8 @@ public final Policy setIamPolicy(ResourceName resource, Policy policy) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String resource = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString();
    *   Policy policy = Policy.newBuilder().build();
@@ -1055,11 +1119,14 @@ public final Policy setIamPolicy(String resource, Policy policy) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   SetIamPolicyRequest request =
    *       SetIamPolicyRequest.newBuilder()
    *           .setResource(BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString())
    *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
    *           .build();
    *   Policy response = databaseAdminClient.setIamPolicy(request);
    * }
@@ -1084,11 +1151,14 @@ public final Policy setIamPolicy(SetIamPolicyRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   SetIamPolicyRequest request =
    *       SetIamPolicyRequest.newBuilder()
    *           .setResource(BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString())
    *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
    *           .build();
    *   ApiFuture<Policy> future = databaseAdminClient.setIamPolicyCallable().futureCall(request);
    *   // Do something.
@@ -1113,6 +1183,8 @@ public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ResourceName resource = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
    *   Policy response = databaseAdminClient.getIamPolicy(resource);
@@ -1144,6 +1216,8 @@ public final Policy getIamPolicy(ResourceName resource) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String resource = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString();
    *   Policy response = databaseAdminClient.getIamPolicy(resource);
@@ -1172,6 +1246,8 @@ public final Policy getIamPolicy(String resource) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   GetIamPolicyRequest request =
    *       GetIamPolicyRequest.newBuilder()
@@ -1202,6 +1278,8 @@ public final Policy getIamPolicy(GetIamPolicyRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   GetIamPolicyRequest request =
    *       GetIamPolicyRequest.newBuilder()
@@ -1231,6 +1309,8 @@ public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ResourceName resource = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
    *   List<String> permissions = new ArrayList<>();
@@ -1269,6 +1349,8 @@ public final TestIamPermissionsResponse testIamPermissions(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String resource = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString();
    *   List<String> permissions = new ArrayList<>();
@@ -1307,6 +1389,8 @@ public final TestIamPermissionsResponse testIamPermissions(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   TestIamPermissionsRequest request =
    *       TestIamPermissionsRequest.newBuilder()
@@ -1337,6 +1421,8 @@ public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsReq
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   TestIamPermissionsRequest request =
    *       TestIamPermissionsRequest.newBuilder()
@@ -1371,6 +1457,8 @@ public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsReq
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   Backup backup = Backup.newBuilder().build();
@@ -1416,6 +1504,8 @@ public final OperationFuture<Backup, CreateBackupMetadata> createBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   Backup backup = Backup.newBuilder().build();
@@ -1461,6 +1551,8 @@ public final OperationFuture<Backup, CreateBackupMetadata> createBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   CreateBackupRequest request =
    *       CreateBackupRequest.newBuilder()
@@ -1497,6 +1589,8 @@ public final OperationFuture<Backup, CreateBackupMetadata> createBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   CreateBackupRequest request =
    *       CreateBackupRequest.newBuilder()
@@ -1533,6 +1627,8 @@ public final OperationFuture<Backup, CreateBackupMetadata> createBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   CreateBackupRequest request =
    *       CreateBackupRequest.newBuilder()
@@ -1567,6 +1663,8 @@ public final UnaryCallable<CreateBackupRequest, Operation> createBackupCallable(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   String backupId = "backupId2121930365";
@@ -1620,6 +1718,8 @@ public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   String backupId = "backupId2121930365";
@@ -1673,6 +1773,8 @@ public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   String backupId = "backupId2121930365";
@@ -1726,6 +1828,8 @@ public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   String backupId = "backupId2121930365";
@@ -1779,6 +1883,8 @@ public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   CopyBackupRequest request =
    *       CopyBackupRequest.newBuilder()
@@ -1816,6 +1922,8 @@ public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   CopyBackupRequest request =
    *       CopyBackupRequest.newBuilder()
@@ -1853,6 +1961,8 @@ public final OperationFuture<Backup, CopyBackupMetadata> copyBackupAsync(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   CopyBackupRequest request =
    *       CopyBackupRequest.newBuilder()
@@ -1879,6 +1989,8 @@ public final UnaryCallable<CopyBackupRequest, Operation> copyBackupCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   BackupName name = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
    *   Backup response = databaseAdminClient.getBackup(name);
@@ -1902,6 +2014,8 @@ public final Backup getBackup(BackupName name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String name = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString();
    *   Backup response = databaseAdminClient.getBackup(name);
@@ -1924,6 +2038,8 @@ public final Backup getBackup(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   GetBackupRequest request =
    *       GetBackupRequest.newBuilder()
@@ -1947,6 +2063,8 @@ public final Backup getBackup(GetBackupRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   GetBackupRequest request =
    *       GetBackupRequest.newBuilder()
@@ -1969,6 +2087,8 @@ public final UnaryCallable<GetBackupRequest, Backup> getBackupCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   Backup backup = Backup.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -1998,6 +2118,8 @@ public final Backup updateBackup(Backup backup, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   UpdateBackupRequest request =
    *       UpdateBackupRequest.newBuilder()
@@ -2022,6 +2144,8 @@ public final Backup updateBackup(UpdateBackupRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   UpdateBackupRequest request =
    *       UpdateBackupRequest.newBuilder()
@@ -2045,6 +2169,8 @@ public final UnaryCallable<UpdateBackupRequest, Backup> updateBackupCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   BackupName name = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]");
    *   databaseAdminClient.deleteBackup(name);
@@ -2068,6 +2194,8 @@ public final void deleteBackup(BackupName name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String name = BackupName.of("[PROJECT]", "[INSTANCE]", "[BACKUP]").toString();
    *   databaseAdminClient.deleteBackup(name);
@@ -2090,6 +2218,8 @@ public final void deleteBackup(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   DeleteBackupRequest request =
    *       DeleteBackupRequest.newBuilder()
@@ -2113,6 +2243,8 @@ public final void deleteBackup(DeleteBackupRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   DeleteBackupRequest request =
    *       DeleteBackupRequest.newBuilder()
@@ -2136,6 +2268,8 @@ public final UnaryCallable<DeleteBackupRequest, Empty> deleteBackupCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   for (Backup element : databaseAdminClient.listBackups(parent).iterateAll()) {
@@ -2164,6 +2298,8 @@ public final ListBackupsPagedResponse listBackups(InstanceName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   for (Backup element : databaseAdminClient.listBackups(parent).iterateAll()) {
@@ -2189,6 +2325,8 @@ public final ListBackupsPagedResponse listBackups(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListBackupsRequest request =
    *       ListBackupsRequest.newBuilder()
@@ -2218,6 +2356,8 @@ public final ListBackupsPagedResponse listBackups(ListBackupsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListBackupsRequest request =
    *       ListBackupsRequest.newBuilder()
@@ -2247,6 +2387,8 @@ public final ListBackupsPagedResponse listBackups(ListBackupsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListBackupsRequest request =
    *       ListBackupsRequest.newBuilder()
@@ -2294,6 +2436,8 @@ public final UnaryCallable<ListBackupsRequest, ListBackupsResponse> listBackupsC
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   String databaseId = "databaseId1688905718";
@@ -2346,6 +2490,8 @@ public final OperationFuture<Database, RestoreDatabaseMetadata> restoreDatabaseA
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   String databaseId = "databaseId1688905718";
@@ -2398,6 +2544,8 @@ public final OperationFuture<Database, RestoreDatabaseMetadata> restoreDatabaseA
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   String databaseId = "databaseId1688905718";
@@ -2450,6 +2598,8 @@ public final OperationFuture<Database, RestoreDatabaseMetadata> restoreDatabaseA
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   String databaseId = "databaseId1688905718";
@@ -2502,6 +2652,8 @@ public final OperationFuture<Database, RestoreDatabaseMetadata> restoreDatabaseA
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   RestoreDatabaseRequest request =
    *       RestoreDatabaseRequest.newBuilder()
@@ -2541,6 +2693,8 @@ public final OperationFuture<Database, RestoreDatabaseMetadata> restoreDatabaseA
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   RestoreDatabaseRequest request =
    *       RestoreDatabaseRequest.newBuilder()
@@ -2580,6 +2734,8 @@ public final OperationFuture<Database, RestoreDatabaseMetadata> restoreDatabaseA
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   RestoreDatabaseRequest request =
    *       RestoreDatabaseRequest.newBuilder()
@@ -2610,6 +2766,8 @@ public final UnaryCallable<RestoreDatabaseRequest, Operation> restoreDatabaseCal
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   for (Operation element : databaseAdminClient.listDatabaseOperations(parent).iterateAll()) {
@@ -2642,6 +2800,8 @@ public final ListDatabaseOperationsPagedResponse listDatabaseOperations(Instance
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   for (Operation element : databaseAdminClient.listDatabaseOperations(parent).iterateAll()) {
@@ -2672,6 +2832,8 @@ public final ListDatabaseOperationsPagedResponse listDatabaseOperations(String p
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListDatabaseOperationsRequest request =
    *       ListDatabaseOperationsRequest.newBuilder()
@@ -2706,6 +2868,8 @@ public final ListDatabaseOperationsPagedResponse listDatabaseOperations(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListDatabaseOperationsRequest request =
    *       ListDatabaseOperationsRequest.newBuilder()
@@ -2740,6 +2904,8 @@ public final ListDatabaseOperationsPagedResponse listDatabaseOperations(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListDatabaseOperationsRequest request =
    *       ListDatabaseOperationsRequest.newBuilder()
@@ -2783,6 +2949,8 @@ public final ListDatabaseOperationsPagedResponse listDatabaseOperations(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   InstanceName parent = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   for (Operation element : databaseAdminClient.listBackupOperations(parent).iterateAll()) {
@@ -2817,6 +2985,8 @@ public final ListBackupOperationsPagedResponse listBackupOperations(InstanceName
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   String parent = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   for (Operation element : databaseAdminClient.listBackupOperations(parent).iterateAll()) {
@@ -2849,6 +3019,8 @@ public final ListBackupOperationsPagedResponse listBackupOperations(String paren
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListBackupOperationsRequest request =
    *       ListBackupOperationsRequest.newBuilder()
@@ -2885,6 +3057,8 @@ public final ListBackupOperationsPagedResponse listBackupOperations(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListBackupOperationsRequest request =
    *       ListBackupOperationsRequest.newBuilder()
@@ -2921,6 +3095,8 @@ public final ListBackupOperationsPagedResponse listBackupOperations(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
    *   ListBackupOperationsRequest request =
    *       ListBackupOperationsRequest.newBuilder()
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 5d924f60ed6..d0f6aeb24ba 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
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -90,6 +90,8 @@
  * <p>For example, to set the total timeout of getDatabase to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * DatabaseAdminSettings.Builder databaseAdminSettingsBuilder = DatabaseAdminSettings.newBuilder();
  * databaseAdminSettingsBuilder
  *     .getDatabaseSettings()
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/package-info.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/package-info.java
index 42874c08c82..199af03da55 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/package-info.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/package-info.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -28,6 +28,8 @@
  * <p>Sample for DatabaseAdminClient:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.create()) {
  *   DatabaseName name = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
  *   Database response = databaseAdminClient.getDatabase(name);
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 5572033a6ae..6b9df8b0e50 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
@@ -1,5 +1,5 @@
 /*
- * 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.
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 992e5a79d2b..c6cab995b34 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
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -108,6 +108,8 @@
  * <p>For example, to set the total timeout of getDatabase to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * DatabaseAdminStubSettings.Builder databaseAdminSettingsBuilder =
  *     DatabaseAdminStubSettings.newBuilder();
  * databaseAdminSettingsBuilder
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminCallableFactory.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminCallableFactory.java
index 172d6b25abb..eaec711af7c 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminCallableFactory.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/database/v1/stub/GrpcDatabaseAdminCallableFactory.java
@@ -1,5 +1,5 @@
 /*
- * 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.
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 0df16f344e9..f7f0d8472bf 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
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClient.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClient.java
index 745c9229431..e122abe48e5 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClient.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClient.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -85,6 +85,8 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
  *   InstanceConfigName name = InstanceConfigName.of("[PROJECT]", "[INSTANCE_CONFIG]");
  *   InstanceConfig response = instanceAdminClient.getInstanceConfig(name);
@@ -120,6 +122,8 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * InstanceAdminSettings instanceAdminSettings =
  *     InstanceAdminSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -130,6 +134,8 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * InstanceAdminSettings instanceAdminSettings =
  *     InstanceAdminSettings.newBuilder().setEndpoint(myEndpoint).build();
  * InstanceAdminClient instanceAdminClient = InstanceAdminClient.create(instanceAdminSettings);
@@ -208,6 +214,8 @@ public final OperationsClient getOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ProjectName parent = ProjectName.of("[PROJECT]");
    *   for (InstanceConfig element : instanceAdminClient.listInstanceConfigs(parent).iterateAll()) {
@@ -235,6 +243,8 @@ public final ListInstanceConfigsPagedResponse listInstanceConfigs(ProjectName pa
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   String parent = ProjectName.of("[PROJECT]").toString();
    *   for (InstanceConfig element : instanceAdminClient.listInstanceConfigs(parent).iterateAll()) {
@@ -260,6 +270,8 @@ public final ListInstanceConfigsPagedResponse listInstanceConfigs(String parent)
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ListInstanceConfigsRequest request =
    *       ListInstanceConfigsRequest.newBuilder()
@@ -288,6 +300,8 @@ public final ListInstanceConfigsPagedResponse listInstanceConfigs(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ListInstanceConfigsRequest request =
    *       ListInstanceConfigsRequest.newBuilder()
@@ -316,6 +330,8 @@ public final ListInstanceConfigsPagedResponse listInstanceConfigs(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ListInstanceConfigsRequest request =
    *       ListInstanceConfigsRequest.newBuilder()
@@ -351,6 +367,8 @@ public final ListInstanceConfigsPagedResponse listInstanceConfigs(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   InstanceConfigName name = InstanceConfigName.of("[PROJECT]", "[INSTANCE_CONFIG]");
    *   InstanceConfig response = instanceAdminClient.getInstanceConfig(name);
@@ -376,6 +394,8 @@ public final InstanceConfig getInstanceConfig(InstanceConfigName name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   String name = InstanceConfigName.of("[PROJECT]", "[INSTANCE_CONFIG]").toString();
    *   InstanceConfig response = instanceAdminClient.getInstanceConfig(name);
@@ -398,6 +418,8 @@ public final InstanceConfig getInstanceConfig(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   GetInstanceConfigRequest request =
    *       GetInstanceConfigRequest.newBuilder()
@@ -421,6 +443,8 @@ public final InstanceConfig getInstanceConfig(GetInstanceConfigRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   GetInstanceConfigRequest request =
    *       GetInstanceConfigRequest.newBuilder()
@@ -444,6 +468,8 @@ public final UnaryCallable<GetInstanceConfigRequest, InstanceConfig> getInstance
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ProjectName parent = ProjectName.of("[PROJECT]");
    *   for (Instance element : instanceAdminClient.listInstances(parent).iterateAll()) {
@@ -471,6 +497,8 @@ public final ListInstancesPagedResponse listInstances(ProjectName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   String parent = ProjectName.of("[PROJECT]").toString();
    *   for (Instance element : instanceAdminClient.listInstances(parent).iterateAll()) {
@@ -495,6 +523,8 @@ public final ListInstancesPagedResponse listInstances(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ListInstancesRequest request =
    *       ListInstancesRequest.newBuilder()
@@ -523,6 +553,8 @@ public final ListInstancesPagedResponse listInstances(ListInstancesRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ListInstancesRequest request =
    *       ListInstancesRequest.newBuilder()
@@ -552,6 +584,8 @@ public final ListInstancesPagedResponse listInstances(ListInstancesRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ListInstancesRequest request =
    *       ListInstancesRequest.newBuilder()
@@ -586,6 +620,8 @@ public final UnaryCallable<ListInstancesRequest, ListInstancesResponse> listInst
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   InstanceName name = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   Instance response = instanceAdminClient.getInstance(name);
@@ -609,6 +645,8 @@ public final Instance getInstance(InstanceName name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   String name = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   Instance response = instanceAdminClient.getInstance(name);
@@ -631,6 +669,8 @@ public final Instance getInstance(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   GetInstanceRequest request =
    *       GetInstanceRequest.newBuilder()
@@ -655,6 +695,8 @@ public final Instance getInstance(GetInstanceRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   GetInstanceRequest request =
    *       GetInstanceRequest.newBuilder()
@@ -706,6 +748,8 @@ public final UnaryCallable<GetInstanceRequest, Instance> getInstanceCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ProjectName parent = ProjectName.of("[PROJECT]");
    *   String instanceId = "instanceId902024336";
@@ -769,6 +813,8 @@ public final OperationFuture<Instance, CreateInstanceMetadata> createInstanceAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   String parent = ProjectName.of("[PROJECT]").toString();
    *   String instanceId = "instanceId902024336";
@@ -832,6 +878,8 @@ public final OperationFuture<Instance, CreateInstanceMetadata> createInstanceAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   CreateInstanceRequest request =
    *       CreateInstanceRequest.newBuilder()
@@ -886,6 +934,8 @@ public final OperationFuture<Instance, CreateInstanceMetadata> createInstanceAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   CreateInstanceRequest request =
    *       CreateInstanceRequest.newBuilder()
@@ -940,6 +990,8 @@ public final OperationFuture<Instance, CreateInstanceMetadata> createInstanceAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   CreateInstanceRequest request =
    *       CreateInstanceRequest.newBuilder()
@@ -997,6 +1049,8 @@ public final UnaryCallable<CreateInstanceRequest, Operation> createInstanceCalla
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   Instance instance = Instance.newBuilder().build();
    *   FieldMask fieldMask = FieldMask.newBuilder().build();
@@ -1061,6 +1115,8 @@ public final OperationFuture<Instance, UpdateInstanceMetadata> updateInstanceAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   UpdateInstanceRequest request =
    *       UpdateInstanceRequest.newBuilder()
@@ -1118,6 +1174,8 @@ public final OperationFuture<Instance, UpdateInstanceMetadata> updateInstanceAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   UpdateInstanceRequest request =
    *       UpdateInstanceRequest.newBuilder()
@@ -1175,6 +1233,8 @@ public final OperationFuture<Instance, UpdateInstanceMetadata> updateInstanceAsy
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   UpdateInstanceRequest request =
    *       UpdateInstanceRequest.newBuilder()
@@ -1208,6 +1268,8 @@ public final UnaryCallable<UpdateInstanceRequest, Operation> updateInstanceCalla
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   InstanceName name = InstanceName.of("[PROJECT]", "[INSTANCE]");
    *   instanceAdminClient.deleteInstance(name);
@@ -1240,6 +1302,8 @@ public final void deleteInstance(InstanceName name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   String name = InstanceName.of("[PROJECT]", "[INSTANCE]").toString();
    *   instanceAdminClient.deleteInstance(name);
@@ -1271,6 +1335,8 @@ public final void deleteInstance(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   DeleteInstanceRequest request =
    *       DeleteInstanceRequest.newBuilder()
@@ -1303,6 +1369,8 @@ public final void deleteInstance(DeleteInstanceRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   DeleteInstanceRequest request =
    *       DeleteInstanceRequest.newBuilder()
@@ -1328,6 +1396,8 @@ public final UnaryCallable<DeleteInstanceRequest, Empty> deleteInstanceCallable(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ResourceName resource = ProjectName.of("[PROJECT]");
    *   Policy policy = Policy.newBuilder().build();
@@ -1361,6 +1431,8 @@ public final Policy setIamPolicy(ResourceName resource, Policy policy) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   String resource = ProjectName.of("[PROJECT]").toString();
    *   Policy policy = Policy.newBuilder().build();
@@ -1391,11 +1463,14 @@ public final Policy setIamPolicy(String resource, Policy policy) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   SetIamPolicyRequest request =
    *       SetIamPolicyRequest.newBuilder()
    *           .setResource(ProjectName.of("[PROJECT]").toString())
    *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
    *           .build();
    *   Policy response = instanceAdminClient.setIamPolicy(request);
    * }
@@ -1418,11 +1493,14 @@ public final Policy setIamPolicy(SetIamPolicyRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   SetIamPolicyRequest request =
    *       SetIamPolicyRequest.newBuilder()
    *           .setResource(ProjectName.of("[PROJECT]").toString())
    *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
    *           .build();
    *   ApiFuture<Policy> future = instanceAdminClient.setIamPolicyCallable().futureCall(request);
    *   // Do something.
@@ -1445,6 +1523,8 @@ public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ResourceName resource = ProjectName.of("[PROJECT]");
    *   Policy response = instanceAdminClient.getIamPolicy(resource);
@@ -1474,6 +1554,8 @@ public final Policy getIamPolicy(ResourceName resource) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   String resource = ProjectName.of("[PROJECT]").toString();
    *   Policy response = instanceAdminClient.getIamPolicy(resource);
@@ -1500,6 +1582,8 @@ public final Policy getIamPolicy(String resource) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   GetIamPolicyRequest request =
    *       GetIamPolicyRequest.newBuilder()
@@ -1528,6 +1612,8 @@ public final Policy getIamPolicy(GetIamPolicyRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   GetIamPolicyRequest request =
    *       GetIamPolicyRequest.newBuilder()
@@ -1555,6 +1641,8 @@ public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   ResourceName resource = ProjectName.of("[PROJECT]");
    *   List<String> permissions = new ArrayList<>();
@@ -1591,6 +1679,8 @@ public final TestIamPermissionsResponse testIamPermissions(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   String resource = ProjectName.of("[PROJECT]").toString();
    *   List<String> permissions = new ArrayList<>();
@@ -1627,6 +1717,8 @@ public final TestIamPermissionsResponse testIamPermissions(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   TestIamPermissionsRequest request =
    *       TestIamPermissionsRequest.newBuilder()
@@ -1655,6 +1747,8 @@ public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsReq
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
    *   TestIamPermissionsRequest request =
    *       TestIamPermissionsRequest.newBuilder()
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminSettings.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminSettings.java
index 13cce892bec..dc2c2b81efe 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminSettings.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminSettings.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -74,6 +74,8 @@
  * <p>For example, to set the total timeout of getInstanceConfig to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * InstanceAdminSettings.Builder instanceAdminSettingsBuilder = InstanceAdminSettings.newBuilder();
  * instanceAdminSettingsBuilder
  *     .getInstanceConfigSettings()
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/package-info.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/package-info.java
index fcc5426dfe3..385739e5c80 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/package-info.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/package-info.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -40,6 +40,8 @@
  * <p>Sample for InstanceAdminClient:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (InstanceAdminClient instanceAdminClient = InstanceAdminClient.create()) {
  *   InstanceConfigName name = InstanceConfigName.of("[PROJECT]", "[INSTANCE_CONFIG]");
  *   InstanceConfig response = instanceAdminClient.getInstanceConfig(name);
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminCallableFactory.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminCallableFactory.java
index 63cb8366206..f4f94054039 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminCallableFactory.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminCallableFactory.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminStub.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminStub.java
index 1f6a7cb6b73..20cd1496cfb 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminStub.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/GrpcInstanceAdminStub.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStub.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStub.java
index ccd71babf22..dbc187aee61 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStub.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStub.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStubSettings.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStubSettings.java
index 9f9cce8660e..a9351322d17 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStubSettings.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/admin/instance/v1/stub/InstanceAdminStubSettings.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -92,6 +92,8 @@
  * <p>For example, to set the total timeout of getInstanceConfig to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * InstanceAdminStubSettings.Builder instanceAdminSettingsBuilder =
  *     InstanceAdminStubSettings.newBuilder();
  * instanceAdminSettingsBuilder
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerClient.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerClient.java
index f9ea725bb4d..62fc1d38862 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerClient.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerClient.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -73,6 +73,8 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (SpannerClient spannerClient = SpannerClient.create()) {
  *   DatabaseName database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
  *   Session response = spannerClient.createSession(database);
@@ -108,6 +110,8 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * SpannerSettings spannerSettings =
  *     SpannerSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -118,6 +122,8 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * SpannerSettings spannerSettings = SpannerSettings.newBuilder().setEndpoint(myEndpoint).build();
  * SpannerClient spannerClient = SpannerClient.create(spannerSettings);
  * }</pre>
@@ -196,6 +202,8 @@ public SpannerStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   DatabaseName database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
    *   Session response = spannerClient.createSession(database);
@@ -234,6 +242,8 @@ public final Session createSession(DatabaseName database) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   String database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString();
    *   Session response = spannerClient.createSession(database);
@@ -269,6 +279,8 @@ public final Session createSession(String database) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   CreateSessionRequest request =
    *       CreateSessionRequest.newBuilder()
@@ -307,6 +319,8 @@ public final Session createSession(CreateSessionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   CreateSessionRequest request =
    *       CreateSessionRequest.newBuilder()
@@ -333,6 +347,8 @@ public final UnaryCallable<CreateSessionRequest, Session> createSessionCallable(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   DatabaseName database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
    *   int sessionCount = 185691686;
@@ -368,6 +384,8 @@ public final BatchCreateSessionsResponse batchCreateSessions(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   String database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString();
    *   int sessionCount = 185691686;
@@ -402,6 +420,8 @@ public final BatchCreateSessionsResponse batchCreateSessions(String database, in
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   BatchCreateSessionsRequest request =
    *       BatchCreateSessionsRequest.newBuilder()
@@ -430,6 +450,8 @@ public final BatchCreateSessionsResponse batchCreateSessions(BatchCreateSessions
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   BatchCreateSessionsRequest request =
    *       BatchCreateSessionsRequest.newBuilder()
@@ -457,6 +479,8 @@ public final BatchCreateSessionsResponse batchCreateSessions(BatchCreateSessions
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   SessionName name = SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]");
    *   Session response = spannerClient.getSession(name);
@@ -480,6 +504,8 @@ public final Session getSession(SessionName name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   String name = SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]").toString();
    *   Session response = spannerClient.getSession(name);
@@ -502,6 +528,8 @@ public final Session getSession(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   GetSessionRequest request =
    *       GetSessionRequest.newBuilder()
@@ -527,6 +555,8 @@ public final Session getSession(GetSessionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   GetSessionRequest request =
    *       GetSessionRequest.newBuilder()
@@ -550,6 +580,8 @@ public final UnaryCallable<GetSessionRequest, Session> getSessionCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   DatabaseName database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
    *   for (Session element : spannerClient.listSessions(database).iterateAll()) {
@@ -576,6 +608,8 @@ public final ListSessionsPagedResponse listSessions(DatabaseName database) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   String database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]").toString();
    *   for (Session element : spannerClient.listSessions(database).iterateAll()) {
@@ -599,6 +633,8 @@ public final ListSessionsPagedResponse listSessions(String database) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ListSessionsRequest request =
    *       ListSessionsRequest.newBuilder()
@@ -627,6 +663,8 @@ public final ListSessionsPagedResponse listSessions(ListSessionsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ListSessionsRequest request =
    *       ListSessionsRequest.newBuilder()
@@ -655,6 +693,8 @@ public final ListSessionsPagedResponse listSessions(ListSessionsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ListSessionsRequest request =
    *       ListSessionsRequest.newBuilder()
@@ -690,6 +730,8 @@ public final UnaryCallable<ListSessionsRequest, ListSessionsResponse> listSessio
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   SessionName name = SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]");
    *   spannerClient.deleteSession(name);
@@ -713,6 +755,8 @@ public final void deleteSession(SessionName name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   String name = SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]").toString();
    *   spannerClient.deleteSession(name);
@@ -735,6 +779,8 @@ public final void deleteSession(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   DeleteSessionRequest request =
    *       DeleteSessionRequest.newBuilder()
@@ -760,6 +806,8 @@ public final void deleteSession(DeleteSessionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   DeleteSessionRequest request =
    *       DeleteSessionRequest.newBuilder()
@@ -792,6 +840,8 @@ public final UnaryCallable<DeleteSessionRequest, Empty> deleteSessionCallable()
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ExecuteSqlRequest request =
    *       ExecuteSqlRequest.newBuilder()
@@ -834,6 +884,8 @@ public final ResultSet executeSql(ExecuteSqlRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ExecuteSqlRequest request =
    *       ExecuteSqlRequest.newBuilder()
@@ -869,6 +921,8 @@ public final UnaryCallable<ExecuteSqlRequest, ResultSet> executeSqlCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ExecuteSqlRequest request =
    *       ExecuteSqlRequest.newBuilder()
@@ -913,6 +967,8 @@ public final UnaryCallable<ExecuteSqlRequest, ResultSet> executeSqlCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ExecuteBatchDmlRequest request =
    *       ExecuteBatchDmlRequest.newBuilder()
@@ -950,6 +1006,8 @@ public final ExecuteBatchDmlResponse executeBatchDml(ExecuteBatchDmlRequest requ
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ExecuteBatchDmlRequest request =
    *       ExecuteBatchDmlRequest.newBuilder()
@@ -989,6 +1047,8 @@ public final ExecuteBatchDmlResponse executeBatchDml(ExecuteBatchDmlRequest requ
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ReadRequest request =
    *       ReadRequest.newBuilder()
@@ -1032,6 +1092,8 @@ public final ResultSet read(ReadRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ReadRequest request =
    *       ReadRequest.newBuilder()
@@ -1067,6 +1129,8 @@ public final UnaryCallable<ReadRequest, ResultSet> readCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   ReadRequest request =
    *       ReadRequest.newBuilder()
@@ -1102,6 +1166,8 @@ public final ServerStreamingCallable<ReadRequest, PartialResultSet> streamingRea
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   SessionName session = SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]");
    *   TransactionOptions options = TransactionOptions.newBuilder().build();
@@ -1131,6 +1197,8 @@ public final Transaction beginTransaction(SessionName session, TransactionOption
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   String session =
    *       SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]").toString();
@@ -1158,6 +1226,8 @@ public final Transaction beginTransaction(String session, TransactionOptions opt
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   BeginTransactionRequest request =
    *       BeginTransactionRequest.newBuilder()
@@ -1186,6 +1256,8 @@ public final Transaction beginTransaction(BeginTransactionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   BeginTransactionRequest request =
    *       BeginTransactionRequest.newBuilder()
@@ -1222,6 +1294,8 @@ public final UnaryCallable<BeginTransactionRequest, Transaction> beginTransactio
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   SessionName session = SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]");
    *   ByteString transactionId = ByteString.EMPTY;
@@ -1265,6 +1339,8 @@ public final CommitResponse commit(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   SessionName session = SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]");
    *   TransactionOptions singleUseTransaction = TransactionOptions.newBuilder().build();
@@ -1314,6 +1390,8 @@ public final CommitResponse commit(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   String session =
    *       SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]").toString();
@@ -1358,6 +1436,8 @@ public final CommitResponse commit(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   String session =
    *       SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]").toString();
@@ -1408,6 +1488,8 @@ public final CommitResponse commit(
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   CommitRequest request =
    *       CommitRequest.newBuilder()
@@ -1446,6 +1528,8 @@ public final CommitResponse commit(CommitRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   CommitRequest request =
    *       CommitRequest.newBuilder()
@@ -1478,6 +1562,8 @@ public final UnaryCallable<CommitRequest, CommitResponse> commitCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   SessionName session = SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]");
    *   ByteString transactionId = ByteString.EMPTY;
@@ -1511,6 +1597,8 @@ public final void rollback(SessionName session, ByteString transactionId) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   String session =
    *       SessionName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]", "[SESSION]").toString();
@@ -1542,6 +1630,8 @@ public final void rollback(String session, ByteString transactionId) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   RollbackRequest request =
    *       RollbackRequest.newBuilder()
@@ -1573,6 +1663,8 @@ public final void rollback(RollbackRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   RollbackRequest request =
    *       RollbackRequest.newBuilder()
@@ -1606,6 +1698,8 @@ public final UnaryCallable<RollbackRequest, Empty> rollbackCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   PartitionQueryRequest request =
    *       PartitionQueryRequest.newBuilder()
@@ -1644,6 +1738,8 @@ public final PartitionResponse partitionQuery(PartitionQueryRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   PartitionQueryRequest request =
    *       PartitionQueryRequest.newBuilder()
@@ -1683,6 +1779,8 @@ public final UnaryCallable<PartitionQueryRequest, PartitionResponse> partitionQu
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   PartitionReadRequest request =
    *       PartitionReadRequest.newBuilder()
@@ -1723,6 +1821,8 @@ public final PartitionResponse partitionRead(PartitionReadRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
    * try (SpannerClient spannerClient = SpannerClient.create()) {
    *   PartitionReadRequest request =
    *       PartitionReadRequest.newBuilder()
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerSettings.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerSettings.java
index 7954ce7fd63..6541b6528ce 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerSettings.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/SpannerSettings.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -76,6 +76,8 @@
  * <p>For example, to set the total timeout of createSession to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * SpannerSettings.Builder spannerSettingsBuilder = SpannerSettings.newBuilder();
  * spannerSettingsBuilder
  *     .createSessionSettings()
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/package-info.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/package-info.java
index 656eaf03cd0..bc57d4c62ee 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/package-info.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/package-info.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -27,6 +27,8 @@
  * <p>Sample for SpannerClient:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * try (SpannerClient spannerClient = SpannerClient.create()) {
  *   DatabaseName database = DatabaseName.of("[PROJECT]", "[INSTANCE]", "[DATABASE]");
  *   Session response = spannerClient.createSession(database);
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerCallableFactory.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerCallableFactory.java
index 3a16ff48017..e427ff18014 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerCallableFactory.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerCallableFactory.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerStub.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerStub.java
index 5983a3a9c59..0e99079a91f 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerStub.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/GrpcSpannerStub.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStub.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStub.java
index 77719dfb949..7f7a4d95d49 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStub.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStub.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStubSettings.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStubSettings.java
index dfa85e2d85d..f5cb1b7cc8e 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStubSettings.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/v1/stub/SpannerStubSettings.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -91,6 +91,8 @@
  * <p>For example, to set the total timeout of createSession to 30 seconds:
  *
  * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
  * SpannerStubSettings.Builder spannerSettingsBuilder = SpannerStubSettings.newBuilder();
  * spannerSettingsBuilder
  *     .createSessionSettings()
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 4f6d204035f..d018c53e950 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
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -31,6 +31,7 @@
 import com.google.api.gax.rpc.StatusCode;
 import com.google.api.resourcenames.ResourceName;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
 import com.google.iam.v1.Binding;
 import com.google.iam.v1.GetIamPolicyRequest;
 import com.google.iam.v1.Policy;
@@ -656,6 +657,7 @@ public void setIamPolicyTest() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockDatabaseAdmin.addResponse(expectedResponse);
@@ -699,6 +701,7 @@ public void setIamPolicyTest2() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockDatabaseAdmin.addResponse(expectedResponse);
@@ -742,6 +745,7 @@ public void getIamPolicyTest() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockDatabaseAdmin.addResponse(expectedResponse);
@@ -782,6 +786,7 @@ public void getIamPolicyTest2() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockDatabaseAdmin.addResponse(expectedResponse);
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/MockDatabaseAdmin.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/MockDatabaseAdmin.java
index 652b7fbd196..ed3dc441156 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/MockDatabaseAdmin.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/database/v1/MockDatabaseAdmin.java
@@ -1,5 +1,5 @@
 /*
- * 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.
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 ce169fef29f..7768ba32637 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
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClientTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClientTest.java
index 929de268de6..323ebb40372 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClientTest.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/InstanceAdminClientTest.java
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -29,6 +29,7 @@
 import com.google.api.gax.rpc.StatusCode;
 import com.google.api.resourcenames.ResourceName;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
 import com.google.iam.v1.Binding;
 import com.google.iam.v1.GetIamPolicyRequest;
 import com.google.iam.v1.Policy;
@@ -701,6 +702,7 @@ public void setIamPolicyTest() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockInstanceAdmin.addResponse(expectedResponse);
@@ -744,6 +746,7 @@ public void setIamPolicyTest2() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockInstanceAdmin.addResponse(expectedResponse);
@@ -787,6 +790,7 @@ public void getIamPolicyTest() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockInstanceAdmin.addResponse(expectedResponse);
@@ -827,6 +831,7 @@ public void getIamPolicyTest2() throws Exception {
         Policy.newBuilder()
             .setVersion(351608024)
             .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
             .setEtag(ByteString.EMPTY)
             .build();
     mockInstanceAdmin.addResponse(expectedResponse);
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/MockInstanceAdmin.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/MockInstanceAdmin.java
index 3f441d917ee..e107d158b1e 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/MockInstanceAdmin.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/MockInstanceAdmin.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/MockInstanceAdminImpl.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/MockInstanceAdminImpl.java
index 3d0fcde6f58..85d1d5d2d6a 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/MockInstanceAdminImpl.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/admin/instance/v1/MockInstanceAdminImpl.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/MockSpanner.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/MockSpanner.java
index 08688574d1d..3a53cde1223 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/MockSpanner.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/MockSpanner.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/MockSpannerImpl.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/MockSpannerImpl.java
index 455bca0476a..d6176e1f277 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/MockSpannerImpl.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/MockSpannerImpl.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/SpannerClientTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/SpannerClientTest.java
index aa0d6cc183b..24b2c4bbfbf 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/SpannerClientTest.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/v1/SpannerClientTest.java
@@ -1,5 +1,5 @@
 /*
- * 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.
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 ff197cea3fb..e325b21dc03 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
@@ -217,6 +217,8 @@ private Backup(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupInfo.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupInfo.java
index 536df4cce0f..741eb0841cb 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupInfo.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupInfo.java
@@ -126,6 +126,8 @@ private BackupInfo(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupName.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupName.java
index 6733a90275c..3c1ab293524 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupName.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/BackupName.java
@@ -1,5 +1,5 @@
 /*
- * 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.
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
index ea29df0725f..b4903c043e4 100644
--- 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
@@ -96,6 +96,8 @@ private CopyBackupEncryptionConfig(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
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
index 01e37326459..70f71853fba 100644
--- 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
@@ -129,6 +129,8 @@ private CopyBackupMetadata(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
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
index 3e5aa64bae9..10e39890fe7 100644
--- 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
@@ -137,6 +137,8 @@ private CopyBackupRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupEncryptionConfig.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupEncryptionConfig.java
index bd85564f7ba..932f9b67a09 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupEncryptionConfig.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupEncryptionConfig.java
@@ -96,6 +96,8 @@ private CreateBackupEncryptionConfig(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupMetadata.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupMetadata.java
index 02f579b5aa7..e4e78f7c3fc 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupMetadata.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupMetadata.java
@@ -129,6 +129,8 @@ private CreateBackupMetadata(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupRequest.java
index c775d99c42f..f1077c25c50 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateBackupRequest.java
@@ -130,6 +130,8 @@ private CreateBackupRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateDatabaseMetadata.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateDatabaseMetadata.java
index 0d722c07011..deb1bb90671 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateDatabaseMetadata.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateDatabaseMetadata.java
@@ -89,6 +89,8 @@ private CreateDatabaseMetadata(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateDatabaseRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateDatabaseRequest.java
index 9e75cb8015a..0a081115d67 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateDatabaseRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/CreateDatabaseRequest.java
@@ -133,6 +133,8 @@ private CreateDatabaseRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/Database.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/Database.java
index 02000562c6d..c2eea641960 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/Database.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/Database.java
@@ -198,6 +198,8 @@ private Database(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseName.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseName.java
index ca0fd6abf62..93da0e4ae84 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseName.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DatabaseName.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DeleteBackupRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DeleteBackupRequest.java
index c979bcaec2a..15e059950ae 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DeleteBackupRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DeleteBackupRequest.java
@@ -88,6 +88,8 @@ private DeleteBackupRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DropDatabaseRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DropDatabaseRequest.java
index 7ca9b458cac..b9aec131ed9 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DropDatabaseRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/DropDatabaseRequest.java
@@ -88,6 +88,8 @@ private DropDatabaseRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/EncryptionConfig.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/EncryptionConfig.java
index 64528abd94c..11655915342 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/EncryptionConfig.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/EncryptionConfig.java
@@ -88,6 +88,8 @@ private EncryptionConfig(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/EncryptionInfo.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/EncryptionInfo.java
index cd3a5581b1c..9e6f6bdf24f 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/EncryptionInfo.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/EncryptionInfo.java
@@ -111,6 +111,8 @@ private EncryptionInfo(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetBackupRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetBackupRequest.java
index efde5caa557..6ace6fad050 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetBackupRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetBackupRequest.java
@@ -88,6 +88,8 @@ private GetBackupRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseDdlRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseDdlRequest.java
index a5f8846f487..7d7f0c0327c 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseDdlRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseDdlRequest.java
@@ -88,6 +88,8 @@ private GetDatabaseDdlRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseDdlResponse.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseDdlResponse.java
index de7f8389d15..7de9bcb0a52 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseDdlResponse.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseDdlResponse.java
@@ -92,6 +92,8 @@ private GetDatabaseDdlResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseRequest.java
index 2c2459cd887..ad7eee68ede 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/GetDatabaseRequest.java
@@ -88,6 +88,8 @@ private GetDatabaseRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/InstanceName.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/InstanceName.java
index 07ca96c5cf3..abe1ad6b3d8 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/InstanceName.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/InstanceName.java
@@ -1,5 +1,5 @@
 /*
- * 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.
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 a28e28e18f7..e7f80002214 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
@@ -110,6 +110,8 @@ private ListBackupOperationsRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
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 be50a78b625..1f75fff4b5c 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
@@ -101,6 +101,8 @@ private ListBackupOperationsResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupsRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupsRequest.java
index 02eae737148..7dc809545d2 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupsRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupsRequest.java
@@ -109,6 +109,8 @@ private ListBackupsRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupsResponse.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupsResponse.java
index 8605068ea73..1792c4a292a 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupsResponse.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListBackupsResponse.java
@@ -101,6 +101,8 @@ private ListBackupsResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
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 da529706e56..8ce2cf95d59 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
@@ -110,6 +110,8 @@ private ListDatabaseOperationsRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsResponse.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsResponse.java
index 78f56d75734..f4d6436bdff 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsResponse.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabaseOperationsResponse.java
@@ -102,6 +102,8 @@ private ListDatabaseOperationsResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabasesRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabasesRequest.java
index 7e93e917a3e..c93221182b4 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabasesRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabasesRequest.java
@@ -101,6 +101,8 @@ private ListDatabasesRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabasesResponse.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabasesResponse.java
index c38330972a9..1c4a6ff13bc 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabasesResponse.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/ListDatabasesResponse.java
@@ -102,6 +102,8 @@ private ListDatabasesResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/OperationProgress.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/OperationProgress.java
index b4dc5c581ed..69e9af1c687 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/OperationProgress.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/OperationProgress.java
@@ -115,6 +115,8 @@ private OperationProgress(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/OptimizeRestoredDatabaseMetadata.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/OptimizeRestoredDatabaseMetadata.java
index a62311cce7f..b2cb0b8f1b4 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/OptimizeRestoredDatabaseMetadata.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/OptimizeRestoredDatabaseMetadata.java
@@ -109,6 +109,8 @@ private OptimizeRestoredDatabaseMetadata(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseEncryptionConfig.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseEncryptionConfig.java
index 91b0ddab626..e17e96bf2e7 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseEncryptionConfig.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseEncryptionConfig.java
@@ -97,6 +97,8 @@ private RestoreDatabaseEncryptionConfig(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseMetadata.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseMetadata.java
index 87a8bc413c2..72f009ac4f8 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseMetadata.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseMetadata.java
@@ -154,6 +154,8 @@ private RestoreDatabaseMetadata(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -1343,8 +1345,9 @@ public Builder mergeBackupInfo(com.google.spanner.admin.database.v1.BackupInfo v
       } else {
         if (sourceInfoCase_ == 3) {
           backupInfoBuilder_.mergeFrom(value);
+        } else {
+          backupInfoBuilder_.setMessage(value);
         }
-        backupInfoBuilder_.setMessage(value);
       }
       sourceInfoCase_ = 3;
       return this;
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseRequest.java
index b50f8e871a1..46f145a4319 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreDatabaseRequest.java
@@ -122,6 +122,8 @@ private RestoreDatabaseRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreInfo.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreInfo.java
index 9e18faf6d30..667d9f8fc31 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreInfo.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/RestoreInfo.java
@@ -105,6 +105,8 @@ private RestoreInfo(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -852,8 +854,9 @@ public Builder mergeBackupInfo(com.google.spanner.admin.database.v1.BackupInfo v
       } else {
         if (sourceInfoCase_ == 2) {
           backupInfoBuilder_.mergeFrom(value);
+        } else {
+          backupInfoBuilder_.setMessage(value);
         }
-        backupInfoBuilder_.setMessage(value);
       }
       sourceInfoCase_ = 2;
       return this;
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateBackupRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateBackupRequest.java
index 6eb84dbaf82..3d01e71b4ed 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateBackupRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateBackupRequest.java
@@ -110,6 +110,8 @@ private UpdateBackupRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateDatabaseDdlMetadata.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateDatabaseDdlMetadata.java
index 83ee4e374d8..ed624d9d920 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateDatabaseDdlMetadata.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateDatabaseDdlMetadata.java
@@ -132,6 +132,8 @@ private UpdateDatabaseDdlMetadata(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateDatabaseDdlRequest.java b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateDatabaseDdlRequest.java
index 69187cd9420..087317405c9 100644
--- a/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateDatabaseDdlRequest.java
+++ b/proto-google-cloud-spanner-admin-database-v1/src/main/java/com/google/spanner/admin/database/v1/UpdateDatabaseDdlRequest.java
@@ -122,6 +122,8 @@ private UpdateDatabaseDdlRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/CreateInstanceMetadata.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/CreateInstanceMetadata.java
index a5923b520b5..a83eec62946 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/CreateInstanceMetadata.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/CreateInstanceMetadata.java
@@ -141,6 +141,8 @@ private CreateInstanceMetadata(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/CreateInstanceRequest.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/CreateInstanceRequest.java
index 6222aff8450..ec500f8d50e 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/CreateInstanceRequest.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/CreateInstanceRequest.java
@@ -112,6 +112,8 @@ private CreateInstanceRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/DeleteInstanceRequest.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/DeleteInstanceRequest.java
index 70afcc5065a..9f7b984502f 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/DeleteInstanceRequest.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/DeleteInstanceRequest.java
@@ -88,6 +88,8 @@ private DeleteInstanceRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/GetInstanceConfigRequest.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/GetInstanceConfigRequest.java
index 486571ad3bb..7aca3afb5cb 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/GetInstanceConfigRequest.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/GetInstanceConfigRequest.java
@@ -89,6 +89,8 @@ private GetInstanceConfigRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/GetInstanceRequest.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/GetInstanceRequest.java
index a2fc0d3a4bd..73b50eb3d7d 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/GetInstanceRequest.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/GetInstanceRequest.java
@@ -103,6 +103,8 @@ private GetInstanceRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/Instance.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/Instance.java
index ecae61417bd..545ba582cac 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/Instance.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/Instance.java
@@ -147,6 +147,8 @@ private Instance(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -658,7 +660,7 @@ public int getLabelsCount() {
   @java.lang.Override
   public boolean containsLabels(java.lang.String key) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     return internalGetLabels().getMap().containsKey(key);
   }
@@ -727,7 +729,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
   @java.lang.Override
   public java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.String defaultValue) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     java.util.Map<java.lang.String, java.lang.String> map = internalGetLabels().getMap();
     return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -761,7 +763,7 @@ public java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.Strin
   @java.lang.Override
   public java.lang.String getLabelsOrThrow(java.lang.String key) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     java.util.Map<java.lang.String, java.lang.String> map = internalGetLabels().getMap();
     if (!map.containsKey(key)) {
@@ -1965,7 +1967,7 @@ public int getLabelsCount() {
     @java.lang.Override
     public boolean containsLabels(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       return internalGetLabels().getMap().containsKey(key);
     }
@@ -2035,7 +2037,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
     public java.lang.String getLabelsOrDefault(
         java.lang.String key, java.lang.String defaultValue) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, java.lang.String> map = internalGetLabels().getMap();
       return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -2069,7 +2071,7 @@ public java.lang.String getLabelsOrDefault(
     @java.lang.Override
     public java.lang.String getLabelsOrThrow(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, java.lang.String> map = internalGetLabels().getMap();
       if (!map.containsKey(key)) {
@@ -2110,7 +2112,7 @@ public Builder clearLabels() {
      */
     public Builder removeLabels(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       internalGetMutableLabels().getMutableMap().remove(key);
       return this;
@@ -2148,11 +2150,12 @@ public java.util.Map<java.lang.String, java.lang.String> getMutableLabels() {
      */
     public Builder putLabels(java.lang.String key, java.lang.String value) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       if (value == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map value");
       }
+
       internalGetMutableLabels().getMutableMap().put(key, value);
       return this;
     }
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfig.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfig.java
index a233b3abee9..9051e78c16e 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfig.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfig.java
@@ -123,6 +123,8 @@ private InstanceConfig(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfigName.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfigName.java
index 6cb41a82ee5..f35e6486198 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfigName.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceConfigName.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceName.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceName.java
index 0e512305c99..c20c3d693c2 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceName.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceName.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceOrBuilder.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceOrBuilder.java
index 450b7a99ddd..ac663b72453 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceOrBuilder.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/InstanceOrBuilder.java
@@ -295,7 +295,12 @@ public interface InstanceOrBuilder
    *
    * <code>map&lt;string, string&gt; labels = 7;</code>
    */
-  java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.String defaultValue);
+
+  /* nullable */
+  java.lang.String getLabelsOrDefault(
+      java.lang.String key,
+      /* nullable */
+      java.lang.String defaultValue);
   /**
    *
    *
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstanceConfigsRequest.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstanceConfigsRequest.java
index ebf27398536..74baac36e5c 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstanceConfigsRequest.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstanceConfigsRequest.java
@@ -101,6 +101,8 @@ private ListInstanceConfigsRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstanceConfigsResponse.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstanceConfigsResponse.java
index 1726c7ec5d2..69d6dd0ebd2 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstanceConfigsResponse.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstanceConfigsResponse.java
@@ -103,6 +103,8 @@ private ListInstanceConfigsResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstancesRequest.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstancesRequest.java
index deb10d38b43..ddcaa8ee26c 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstancesRequest.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstancesRequest.java
@@ -109,6 +109,8 @@ private ListInstancesRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstancesResponse.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstancesResponse.java
index bd03fe5c750..e85c06d399c 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstancesResponse.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ListInstancesResponse.java
@@ -102,6 +102,8 @@ private ListInstancesResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ProjectName.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ProjectName.java
index 50c5b7c8fd9..54cecb928ac 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ProjectName.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ProjectName.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ReplicaInfo.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ReplicaInfo.java
index e31bd637c94..c217a638303 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ReplicaInfo.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/ReplicaInfo.java
@@ -93,6 +93,8 @@ private ReplicaInfo(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/UpdateInstanceMetadata.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/UpdateInstanceMetadata.java
index fdb914299ee..6db0704d62e 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/UpdateInstanceMetadata.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/UpdateInstanceMetadata.java
@@ -141,6 +141,8 @@ private UpdateInstanceMetadata(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/UpdateInstanceRequest.java b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/UpdateInstanceRequest.java
index 44034ce4591..5450910e701 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/UpdateInstanceRequest.java
+++ b/proto-google-cloud-spanner-admin-instance-v1/src/main/java/com/google/spanner/admin/instance/v1/UpdateInstanceRequest.java
@@ -110,6 +110,8 @@ private UpdateInstanceRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BatchCreateSessionsRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BatchCreateSessionsRequest.java
index 02a2260cb9e..4b864f147d0 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BatchCreateSessionsRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BatchCreateSessionsRequest.java
@@ -108,6 +108,8 @@ private BatchCreateSessionsRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BatchCreateSessionsResponse.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BatchCreateSessionsResponse.java
index 76704fd06ec..f0a483cc234 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BatchCreateSessionsResponse.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BatchCreateSessionsResponse.java
@@ -92,6 +92,8 @@ private BatchCreateSessionsResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BeginTransactionRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BeginTransactionRequest.java
index 3651eee977e..5723cafb43d 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BeginTransactionRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/BeginTransactionRequest.java
@@ -120,6 +120,8 @@ private BeginTransactionRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitRequest.java
index 40396312997..8c017a0826e 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitRequest.java
@@ -81,8 +81,8 @@ private CommitRequest(
             }
           case 18:
             {
-              transactionCase_ = 2;
               transaction_ = input.readBytes();
+              transactionCase_ = 2;
               break;
             }
           case 26:
@@ -143,6 +143,8 @@ private CommitRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -1362,8 +1364,9 @@ public Builder mergeSingleUseTransaction(com.google.spanner.v1.TransactionOption
       } else {
         if (transactionCase_ == 3) {
           singleUseTransactionBuilder_.mergeFrom(value);
+        } else {
+          singleUseTransactionBuilder_.setMessage(value);
         }
-        singleUseTransactionBuilder_.setMessage(value);
       }
       transactionCase_ = 3;
       return this;
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitResponse.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitResponse.java
index 8079a480ee1..43275224b33 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitResponse.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CommitResponse.java
@@ -110,6 +110,8 @@ private CommitResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -223,6 +225,8 @@ private CommitStats(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CreateSessionRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CreateSessionRequest.java
index 4e32e35449f..4aff42e77c7 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CreateSessionRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/CreateSessionRequest.java
@@ -103,6 +103,8 @@ private CreateSessionRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DatabaseName.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DatabaseName.java
index 1c81611049f..e7f0be608ab 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DatabaseName.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DatabaseName.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DeleteSessionRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DeleteSessionRequest.java
index 23ec70f9b56..45c6e27252f 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DeleteSessionRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/DeleteSessionRequest.java
@@ -88,6 +88,8 @@ private DeleteSessionRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteBatchDmlRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteBatchDmlRequest.java
index 9d5558673f0..040730173d1 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteBatchDmlRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteBatchDmlRequest.java
@@ -141,6 +141,8 @@ private ExecuteBatchDmlRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -319,8 +321,12 @@ public interface StatementOrBuilder
      *
      * <code>map&lt;string, .google.spanner.v1.Type&gt; param_types = 3;</code>
      */
+
+    /* nullable */
     com.google.spanner.v1.Type getParamTypesOrDefault(
-        java.lang.String key, com.google.spanner.v1.Type defaultValue);
+        java.lang.String key,
+        /* nullable */
+        com.google.spanner.v1.Type defaultValue);
     /**
      *
      *
@@ -439,6 +445,8 @@ private Statement(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -636,7 +644,7 @@ public int getParamTypesCount() {
     @java.lang.Override
     public boolean containsParamTypes(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       return internalGetParamTypes().getMap().containsKey(key);
     }
@@ -684,7 +692,7 @@ public java.util.Map<java.lang.String, com.google.spanner.v1.Type> getParamTypes
     public com.google.spanner.v1.Type getParamTypesOrDefault(
         java.lang.String key, com.google.spanner.v1.Type defaultValue) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
           internalGetParamTypes().getMap();
@@ -708,7 +716,7 @@ public com.google.spanner.v1.Type getParamTypesOrDefault(
     @java.lang.Override
     public com.google.spanner.v1.Type getParamTypesOrThrow(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
           internalGetParamTypes().getMap();
@@ -1508,7 +1516,7 @@ public int getParamTypesCount() {
       @java.lang.Override
       public boolean containsParamTypes(java.lang.String key) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
         return internalGetParamTypes().getMap().containsKey(key);
       }
@@ -1556,7 +1564,7 @@ public java.util.Map<java.lang.String, com.google.spanner.v1.Type> getParamTypes
       public com.google.spanner.v1.Type getParamTypesOrDefault(
           java.lang.String key, com.google.spanner.v1.Type defaultValue) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
         java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
             internalGetParamTypes().getMap();
@@ -1580,7 +1588,7 @@ public com.google.spanner.v1.Type getParamTypesOrDefault(
       @java.lang.Override
       public com.google.spanner.v1.Type getParamTypesOrThrow(java.lang.String key) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
         java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
             internalGetParamTypes().getMap();
@@ -1611,7 +1619,7 @@ public Builder clearParamTypes() {
        */
       public Builder removeParamTypes(java.lang.String key) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
         internalGetMutableParamTypes().getMutableMap().remove(key);
         return this;
@@ -1638,11 +1646,12 @@ public java.util.Map<java.lang.String, com.google.spanner.v1.Type> getMutablePar
        */
       public Builder putParamTypes(java.lang.String key, com.google.spanner.v1.Type value) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
         if (value == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map value");
         }
+
         internalGetMutableParamTypes().getMutableMap().put(key, value);
         return this;
       }
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteBatchDmlResponse.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteBatchDmlResponse.java
index 814553409d5..509713731b0 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteBatchDmlResponse.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteBatchDmlResponse.java
@@ -123,6 +123,8 @@ private ExecuteBatchDmlResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteSqlRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteSqlRequest.java
index d12a7f0c1ac..15a6bc6092a 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteSqlRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteSqlRequest.java
@@ -202,6 +202,8 @@ private ExecuteSqlRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -594,6 +596,8 @@ private QueryOptions(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -1829,7 +1833,7 @@ public int getParamTypesCount() {
   @java.lang.Override
   public boolean containsParamTypes(java.lang.String key) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     return internalGetParamTypes().getMap().containsKey(key);
   }
@@ -1877,7 +1881,7 @@ public java.util.Map<java.lang.String, com.google.spanner.v1.Type> getParamTypes
   public com.google.spanner.v1.Type getParamTypesOrDefault(
       java.lang.String key, com.google.spanner.v1.Type defaultValue) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
         internalGetParamTypes().getMap();
@@ -1901,7 +1905,7 @@ public com.google.spanner.v1.Type getParamTypesOrDefault(
   @java.lang.Override
   public com.google.spanner.v1.Type getParamTypesOrThrow(java.lang.String key) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
         internalGetParamTypes().getMap();
@@ -3422,7 +3426,7 @@ public int getParamTypesCount() {
     @java.lang.Override
     public boolean containsParamTypes(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       return internalGetParamTypes().getMap().containsKey(key);
     }
@@ -3470,7 +3474,7 @@ public java.util.Map<java.lang.String, com.google.spanner.v1.Type> getParamTypes
     public com.google.spanner.v1.Type getParamTypesOrDefault(
         java.lang.String key, com.google.spanner.v1.Type defaultValue) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
           internalGetParamTypes().getMap();
@@ -3494,7 +3498,7 @@ public com.google.spanner.v1.Type getParamTypesOrDefault(
     @java.lang.Override
     public com.google.spanner.v1.Type getParamTypesOrThrow(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
           internalGetParamTypes().getMap();
@@ -3525,7 +3529,7 @@ public Builder clearParamTypes() {
      */
     public Builder removeParamTypes(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       internalGetMutableParamTypes().getMutableMap().remove(key);
       return this;
@@ -3552,11 +3556,12 @@ public java.util.Map<java.lang.String, com.google.spanner.v1.Type> getMutablePar
      */
     public Builder putParamTypes(java.lang.String key, com.google.spanner.v1.Type value) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       if (value == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map value");
       }
+
       internalGetMutableParamTypes().getMutableMap().put(key, value);
       return this;
     }
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteSqlRequestOrBuilder.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteSqlRequestOrBuilder.java
index 869777efc01..1b99cbbfa29 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteSqlRequestOrBuilder.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ExecuteSqlRequestOrBuilder.java
@@ -255,8 +255,12 @@ public interface ExecuteSqlRequestOrBuilder
    *
    * <code>map&lt;string, .google.spanner.v1.Type&gt; param_types = 5;</code>
    */
+
+  /* nullable */
   com.google.spanner.v1.Type getParamTypesOrDefault(
-      java.lang.String key, com.google.spanner.v1.Type defaultValue);
+      java.lang.String key,
+      /* nullable */
+      com.google.spanner.v1.Type defaultValue);
   /**
    *
    *
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/GetSessionRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/GetSessionRequest.java
index 163a4ce19cb..959d2a90b87 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/GetSessionRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/GetSessionRequest.java
@@ -88,6 +88,8 @@ private GetSessionRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeyRange.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeyRange.java
index 31eeafed841..4a470237c3f 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeyRange.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeyRange.java
@@ -199,6 +199,8 @@ private KeyRange(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -1172,8 +1174,9 @@ public Builder mergeStartClosed(com.google.protobuf.ListValue value) {
       } else {
         if (startKeyTypeCase_ == 1) {
           startClosedBuilder_.mergeFrom(value);
+        } else {
+          startClosedBuilder_.setMessage(value);
         }
-        startClosedBuilder_.setMessage(value);
       }
       startKeyTypeCase_ = 1;
       return this;
@@ -1387,8 +1390,9 @@ public Builder mergeStartOpen(com.google.protobuf.ListValue value) {
       } else {
         if (startKeyTypeCase_ == 2) {
           startOpenBuilder_.mergeFrom(value);
+        } else {
+          startOpenBuilder_.setMessage(value);
         }
-        startOpenBuilder_.setMessage(value);
       }
       startKeyTypeCase_ = 2;
       return this;
@@ -1601,8 +1605,9 @@ public Builder mergeEndClosed(com.google.protobuf.ListValue value) {
       } else {
         if (endKeyTypeCase_ == 3) {
           endClosedBuilder_.mergeFrom(value);
+        } else {
+          endClosedBuilder_.setMessage(value);
         }
-        endClosedBuilder_.setMessage(value);
       }
       endKeyTypeCase_ = 3;
       return this;
@@ -1815,8 +1820,9 @@ public Builder mergeEndOpen(com.google.protobuf.ListValue value) {
       } else {
         if (endKeyTypeCase_ == 4) {
           endOpenBuilder_.mergeFrom(value);
+        } else {
+          endOpenBuilder_.setMessage(value);
         }
-        endOpenBuilder_.setMessage(value);
       }
       endKeyTypeCase_ = 4;
       return this;
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeySet.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeySet.java
index c9cc35fa862..a0938c188d6 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeySet.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/KeySet.java
@@ -113,6 +113,8 @@ private KeySet(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ListSessionsRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ListSessionsRequest.java
index e04fad96d96..ef73e426ed8 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ListSessionsRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ListSessionsRequest.java
@@ -109,6 +109,8 @@ private ListSessionsRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ListSessionsResponse.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ListSessionsResponse.java
index 9bdc707569d..1efb5afb56e 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ListSessionsResponse.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ListSessionsResponse.java
@@ -100,6 +100,8 @@ private ListSessionsResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Mutation.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Mutation.java
index b06d7426160..971756934cc 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Mutation.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Mutation.java
@@ -161,6 +161,8 @@ private Mutation(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -456,6 +458,8 @@ private Write(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -2112,6 +2116,8 @@ private Delete(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -3920,8 +3926,9 @@ public Builder mergeInsert(com.google.spanner.v1.Mutation.Write value) {
       } else {
         if (operationCase_ == 1) {
           insertBuilder_.mergeFrom(value);
+        } else {
+          insertBuilder_.setMessage(value);
         }
-        insertBuilder_.setMessage(value);
       }
       operationCase_ = 1;
       return this;
@@ -4137,8 +4144,9 @@ public Builder mergeUpdate(com.google.spanner.v1.Mutation.Write value) {
       } else {
         if (operationCase_ == 2) {
           updateBuilder_.mergeFrom(value);
+        } else {
+          updateBuilder_.setMessage(value);
         }
-        updateBuilder_.setMessage(value);
       }
       operationCase_ = 2;
       return this;
@@ -4374,8 +4382,9 @@ public Builder mergeInsertOrUpdate(com.google.spanner.v1.Mutation.Write value) {
       } else {
         if (operationCase_ == 3) {
           insertOrUpdateBuilder_.mergeFrom(value);
+        } else {
+          insertOrUpdateBuilder_.setMessage(value);
         }
-        insertOrUpdateBuilder_.setMessage(value);
       }
       operationCase_ = 3;
       return this;
@@ -4637,8 +4646,9 @@ public Builder mergeReplace(com.google.spanner.v1.Mutation.Write value) {
       } else {
         if (operationCase_ == 4) {
           replaceBuilder_.mergeFrom(value);
+        } else {
+          replaceBuilder_.setMessage(value);
         }
-        replaceBuilder_.setMessage(value);
       }
       operationCase_ = 4;
       return this;
@@ -4878,8 +4888,9 @@ public Builder mergeDelete(com.google.spanner.v1.Mutation.Delete value) {
       } else {
         if (operationCase_ == 5) {
           deleteBuilder_.mergeFrom(value);
+        } else {
+          deleteBuilder_.setMessage(value);
         }
-        deleteBuilder_.setMessage(value);
       }
       operationCase_ = 5;
       return this;
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartialResultSet.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartialResultSet.java
index 4caabb29020..e87558b78e0 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartialResultSet.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartialResultSet.java
@@ -136,6 +136,8 @@ private PartialResultSet(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Partition.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Partition.java
index 6c366b815b8..a3e59d46f94 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Partition.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Partition.java
@@ -87,6 +87,8 @@ private Partition(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionOptions.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionOptions.java
index 9f51c4c833c..152c58f2d92 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionOptions.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionOptions.java
@@ -90,6 +90,8 @@ private PartitionOptions(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionQueryRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionQueryRequest.java
index 58d5a55b134..af28148b081 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionQueryRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionQueryRequest.java
@@ -159,6 +159,8 @@ private PartitionQueryRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -475,7 +477,7 @@ public int getParamTypesCount() {
   @java.lang.Override
   public boolean containsParamTypes(java.lang.String key) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     return internalGetParamTypes().getMap().containsKey(key);
   }
@@ -523,7 +525,7 @@ public java.util.Map<java.lang.String, com.google.spanner.v1.Type> getParamTypes
   public com.google.spanner.v1.Type getParamTypesOrDefault(
       java.lang.String key, com.google.spanner.v1.Type defaultValue) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
         internalGetParamTypes().getMap();
@@ -547,7 +549,7 @@ public com.google.spanner.v1.Type getParamTypesOrDefault(
   @java.lang.Override
   public com.google.spanner.v1.Type getParamTypesOrThrow(java.lang.String key) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
         internalGetParamTypes().getMap();
@@ -1809,7 +1811,7 @@ public int getParamTypesCount() {
     @java.lang.Override
     public boolean containsParamTypes(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       return internalGetParamTypes().getMap().containsKey(key);
     }
@@ -1857,7 +1859,7 @@ public java.util.Map<java.lang.String, com.google.spanner.v1.Type> getParamTypes
     public com.google.spanner.v1.Type getParamTypesOrDefault(
         java.lang.String key, com.google.spanner.v1.Type defaultValue) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
           internalGetParamTypes().getMap();
@@ -1881,7 +1883,7 @@ public com.google.spanner.v1.Type getParamTypesOrDefault(
     @java.lang.Override
     public com.google.spanner.v1.Type getParamTypesOrThrow(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, com.google.spanner.v1.Type> map =
           internalGetParamTypes().getMap();
@@ -1912,7 +1914,7 @@ public Builder clearParamTypes() {
      */
     public Builder removeParamTypes(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       internalGetMutableParamTypes().getMutableMap().remove(key);
       return this;
@@ -1939,11 +1941,12 @@ public java.util.Map<java.lang.String, com.google.spanner.v1.Type> getMutablePar
      */
     public Builder putParamTypes(java.lang.String key, com.google.spanner.v1.Type value) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       if (value == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map value");
       }
+
       internalGetMutableParamTypes().getMutableMap().put(key, value);
       return this;
     }
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionQueryRequestOrBuilder.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionQueryRequestOrBuilder.java
index e771b3d289a..55f3a659ad0 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionQueryRequestOrBuilder.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionQueryRequestOrBuilder.java
@@ -253,8 +253,12 @@ public interface PartitionQueryRequestOrBuilder
    *
    * <code>map&lt;string, .google.spanner.v1.Type&gt; param_types = 5;</code>
    */
+
+  /* nullable */
   com.google.spanner.v1.Type getParamTypesOrDefault(
-      java.lang.String key, com.google.spanner.v1.Type defaultValue);
+      java.lang.String key,
+      /* nullable */
+      com.google.spanner.v1.Type defaultValue);
   /**
    *
    *
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionReadRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionReadRequest.java
index f0d19a0acc3..7baa5cc3a2a 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionReadRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionReadRequest.java
@@ -162,6 +162,8 @@ private PartitionReadRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionResponse.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionResponse.java
index 7ee074e71cf..7b2384ab229 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionResponse.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PartitionResponse.java
@@ -108,6 +108,8 @@ private PartitionResponse(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PlanNode.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PlanNode.java
index 689b8088c86..f9cca39d45a 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PlanNode.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/PlanNode.java
@@ -160,6 +160,8 @@ private PlanNode(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -525,6 +527,8 @@ private ChildLink(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -1593,6 +1597,8 @@ private ShortRepresentation(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -1719,7 +1725,7 @@ public int getSubqueriesCount() {
     @java.lang.Override
     public boolean containsSubqueries(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       return internalGetSubqueries().getMap().containsKey(key);
     }
@@ -1762,7 +1768,7 @@ public java.util.Map<java.lang.String, java.lang.Integer> getSubqueriesMap() {
     @java.lang.Override
     public int getSubqueriesOrDefault(java.lang.String key, int defaultValue) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, java.lang.Integer> map = internalGetSubqueries().getMap();
       return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -1783,7 +1789,7 @@ public int getSubqueriesOrDefault(java.lang.String key, int defaultValue) {
     @java.lang.Override
     public int getSubqueriesOrThrow(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, java.lang.Integer> map = internalGetSubqueries().getMap();
       if (!map.containsKey(key)) {
@@ -2309,7 +2315,7 @@ public int getSubqueriesCount() {
       @java.lang.Override
       public boolean containsSubqueries(java.lang.String key) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
         return internalGetSubqueries().getMap().containsKey(key);
       }
@@ -2352,7 +2358,7 @@ public java.util.Map<java.lang.String, java.lang.Integer> getSubqueriesMap() {
       @java.lang.Override
       public int getSubqueriesOrDefault(java.lang.String key, int defaultValue) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
         java.util.Map<java.lang.String, java.lang.Integer> map = internalGetSubqueries().getMap();
         return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -2373,7 +2379,7 @@ public int getSubqueriesOrDefault(java.lang.String key, int defaultValue) {
       @java.lang.Override
       public int getSubqueriesOrThrow(java.lang.String key) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
         java.util.Map<java.lang.String, java.lang.Integer> map = internalGetSubqueries().getMap();
         if (!map.containsKey(key)) {
@@ -2401,7 +2407,7 @@ public Builder clearSubqueries() {
        */
       public Builder removeSubqueries(java.lang.String key) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
         internalGetMutableSubqueries().getMutableMap().remove(key);
         return this;
@@ -2426,7 +2432,7 @@ public java.util.Map<java.lang.String, java.lang.Integer> getMutableSubqueries()
        */
       public Builder putSubqueries(java.lang.String key, int value) {
         if (key == null) {
-          throw new java.lang.NullPointerException();
+          throw new NullPointerException("map key");
         }
 
         internalGetMutableSubqueries().getMutableMap().put(key, value);
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/QueryPlan.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/QueryPlan.java
index d00d511db25..ff43f87a24d 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/QueryPlan.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/QueryPlan.java
@@ -92,6 +92,8 @@ private QueryPlan(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ReadRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ReadRequest.java
index 99c4419cac9..0cebc9cdd8d 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ReadRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ReadRequest.java
@@ -180,6 +180,8 @@ private ReadRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/RequestOptions.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/RequestOptions.java
index f915ca2d64d..751e1440d40 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/RequestOptions.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/RequestOptions.java
@@ -104,6 +104,8 @@ private RequestOptions(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSet.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSet.java
index 18f72a29bdb..f4bc8b22561 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSet.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSet.java
@@ -125,6 +125,8 @@ private ResultSet(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetMetadata.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetMetadata.java
index a9d3e4f45be..72c8bb44cf5 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetMetadata.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetMetadata.java
@@ -109,6 +109,8 @@ private ResultSetMetadata(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetStats.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetStats.java
index cbd9063c37e..a1bda97f881 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetStats.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/ResultSetStats.java
@@ -100,14 +100,14 @@ private ResultSetStats(
             }
           case 24:
             {
-              rowCountCase_ = 3;
               rowCount_ = input.readInt64();
+              rowCountCase_ = 3;
               break;
             }
           case 32:
             {
-              rowCountCase_ = 4;
               rowCount_ = input.readInt64();
+              rowCountCase_ = 4;
               break;
             }
           default:
@@ -121,6 +121,8 @@ private ResultSetStats(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/RollbackRequest.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/RollbackRequest.java
index 41e9da856e2..e2984e096ea 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/RollbackRequest.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/RollbackRequest.java
@@ -94,6 +94,8 @@ private RollbackRequest(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Session.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Session.java
index 66b43f76803..a41708c4f95 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Session.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Session.java
@@ -132,6 +132,8 @@ private Session(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -256,7 +258,7 @@ public int getLabelsCount() {
   @java.lang.Override
   public boolean containsLabels(java.lang.String key) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     return internalGetLabels().getMap().containsKey(key);
   }
@@ -303,7 +305,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
   @java.lang.Override
   public java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.String defaultValue) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     java.util.Map<java.lang.String, java.lang.String> map = internalGetLabels().getMap();
     return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -326,7 +328,7 @@ public java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.Strin
   @java.lang.Override
   public java.lang.String getLabelsOrThrow(java.lang.String key) {
     if (key == null) {
-      throw new java.lang.NullPointerException();
+      throw new NullPointerException("map key");
     }
     java.util.Map<java.lang.String, java.lang.String> map = internalGetLabels().getMap();
     if (!map.containsKey(key)) {
@@ -1003,7 +1005,7 @@ public int getLabelsCount() {
     @java.lang.Override
     public boolean containsLabels(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       return internalGetLabels().getMap().containsKey(key);
     }
@@ -1051,7 +1053,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
     public java.lang.String getLabelsOrDefault(
         java.lang.String key, java.lang.String defaultValue) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, java.lang.String> map = internalGetLabels().getMap();
       return map.containsKey(key) ? map.get(key) : defaultValue;
@@ -1074,7 +1076,7 @@ public java.lang.String getLabelsOrDefault(
     @java.lang.Override
     public java.lang.String getLabelsOrThrow(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       java.util.Map<java.lang.String, java.lang.String> map = internalGetLabels().getMap();
       if (!map.containsKey(key)) {
@@ -1104,7 +1106,7 @@ public Builder clearLabels() {
      */
     public Builder removeLabels(java.lang.String key) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       internalGetMutableLabels().getMutableMap().remove(key);
       return this;
@@ -1131,11 +1133,12 @@ public java.util.Map<java.lang.String, java.lang.String> getMutableLabels() {
      */
     public Builder putLabels(java.lang.String key, java.lang.String value) {
       if (key == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map key");
       }
       if (value == null) {
-        throw new java.lang.NullPointerException();
+        throw new NullPointerException("map value");
       }
+
       internalGetMutableLabels().getMutableMap().put(key, value);
       return this;
     }
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionName.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionName.java
index 839d4d6556a..84eb4091a65 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionName.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionName.java
@@ -1,5 +1,5 @@
 /*
- * 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.
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionOrBuilder.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionOrBuilder.java
index 556832d0093..f25619e848e 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionOrBuilder.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/SessionOrBuilder.java
@@ -114,7 +114,12 @@ public interface SessionOrBuilder
    *
    * <code>map&lt;string, string&gt; labels = 2;</code>
    */
-  java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.String defaultValue);
+
+  /* nullable */
+  java.lang.String getLabelsOrDefault(
+      java.lang.String key,
+      /* nullable */
+      java.lang.String defaultValue);
   /**
    *
    *
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/StructType.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/StructType.java
index 028b7e7559e..b6d2eef84b5 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/StructType.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/StructType.java
@@ -93,6 +93,8 @@ private StructType(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -278,6 +280,8 @@ private Field(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Transaction.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Transaction.java
index be57d6c5044..088073c16c3 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Transaction.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Transaction.java
@@ -101,6 +101,8 @@ private Transaction(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionOptions.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionOptions.java
index 3de89cc4c80..9c3fd1a22c8 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionOptions.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionOptions.java
@@ -349,6 +349,8 @@ private TransactionOptions(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -438,6 +440,8 @@ private ReadWrite(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -885,6 +889,8 @@ private PartitionedDml(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -1607,8 +1613,8 @@ private ReadOnly(
               break;
             case 8:
               {
-                timestampBoundCase_ = 1;
                 timestampBound_ = input.readBool();
+                timestampBoundCase_ = 1;
                 break;
               }
             case 18:
@@ -1687,6 +1693,8 @@ private ReadOnly(
         }
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
         throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
       } catch (java.io.IOException e) {
         throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
       } finally {
@@ -2823,8 +2831,9 @@ public Builder mergeMinReadTimestamp(com.google.protobuf.Timestamp value) {
         } else {
           if (timestampBoundCase_ == 2) {
             minReadTimestampBuilder_.mergeFrom(value);
+          } else {
+            minReadTimestampBuilder_.setMessage(value);
           }
-          minReadTimestampBuilder_.setMessage(value);
         }
         timestampBoundCase_ = 2;
         return this;
@@ -3105,8 +3114,9 @@ public Builder mergeMaxStaleness(com.google.protobuf.Duration value) {
         } else {
           if (timestampBoundCase_ == 3) {
             maxStalenessBuilder_.mergeFrom(value);
+          } else {
+            maxStalenessBuilder_.setMessage(value);
           }
-          maxStalenessBuilder_.setMessage(value);
         }
         timestampBoundCase_ = 3;
         return this;
@@ -3398,8 +3408,9 @@ public Builder mergeReadTimestamp(com.google.protobuf.Timestamp value) {
         } else {
           if (timestampBoundCase_ == 4) {
             readTimestampBuilder_.mergeFrom(value);
+          } else {
+            readTimestampBuilder_.setMessage(value);
           }
-          readTimestampBuilder_.setMessage(value);
         }
         timestampBoundCase_ = 4;
         return this;
@@ -3682,8 +3693,9 @@ public Builder mergeExactStaleness(com.google.protobuf.Duration value) {
         } else {
           if (timestampBoundCase_ == 5) {
             exactStalenessBuilder_.mergeFrom(value);
+          } else {
+            exactStalenessBuilder_.setMessage(value);
           }
-          exactStalenessBuilder_.setMessage(value);
         }
         timestampBoundCase_ = 5;
         return this;
@@ -4903,8 +4915,9 @@ public Builder mergeReadWrite(com.google.spanner.v1.TransactionOptions.ReadWrite
       } else {
         if (modeCase_ == 1) {
           readWriteBuilder_.mergeFrom(value);
+        } else {
+          readWriteBuilder_.setMessage(value);
         }
-        readWriteBuilder_.setMessage(value);
       }
       modeCase_ = 1;
       return this;
@@ -5142,8 +5155,9 @@ public Builder mergePartitionedDml(
       } else {
         if (modeCase_ == 3) {
           partitionedDmlBuilder_.mergeFrom(value);
+        } else {
+          partitionedDmlBuilder_.setMessage(value);
         }
-        partitionedDmlBuilder_.setMessage(value);
       }
       modeCase_ = 3;
       return this;
@@ -5380,8 +5394,9 @@ public Builder mergeReadOnly(com.google.spanner.v1.TransactionOptions.ReadOnly v
       } else {
         if (modeCase_ == 2) {
           readOnlyBuilder_.mergeFrom(value);
+        } else {
+          readOnlyBuilder_.setMessage(value);
         }
-        readOnlyBuilder_.setMessage(value);
       }
       modeCase_ = 2;
       return this;
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionSelector.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionSelector.java
index 0ea44276aa0..9b032924cac 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionSelector.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/TransactionSelector.java
@@ -89,8 +89,8 @@ private TransactionSelector(
             }
           case 18:
             {
-              selectorCase_ = 2;
               selector_ = input.readBytes();
+              selectorCase_ = 2;
               break;
             }
           case 26:
@@ -120,6 +120,8 @@ private TransactionSelector(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {
@@ -875,8 +877,9 @@ public Builder mergeSingleUse(com.google.spanner.v1.TransactionOptions value) {
       } else {
         if (selectorCase_ == 1) {
           singleUseBuilder_.mergeFrom(value);
+        } else {
+          singleUseBuilder_.setMessage(value);
         }
-        singleUseBuilder_.setMessage(value);
       }
       selectorCase_ = 1;
       return this;
@@ -1173,8 +1176,9 @@ public Builder mergeBegin(com.google.spanner.v1.TransactionOptions value) {
       } else {
         if (selectorCase_ == 3) {
           beginBuilder_.mergeFrom(value);
+        } else {
+          beginBuilder_.setMessage(value);
         }
-        beginBuilder_.setMessage(value);
       }
       selectorCase_ = 3;
       return this;
diff --git a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Type.java b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Type.java
index be8ca8f5e9f..63f411de123 100644
--- a/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Type.java
+++ b/proto-google-cloud-spanner-v1/src/main/java/com/google/spanner/v1/Type.java
@@ -127,6 +127,8 @@ private Type(
       }
     } catch (com.google.protobuf.InvalidProtocolBufferException e) {
       throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
     } catch (java.io.IOException e) {
       throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
     } finally {