Put EOP memo on record not synth txn

Signed-off-by: Michael Tinker <michael.tinker@swirldslabs.com>

hedera-node/hedera-token-service-impl/src/main/java/com/hedera/node/app/service/token/impl/handlers/staking/EndOfStakingPeriodUpdater.java

@@ -225,25 +225,26 @@ public void updateNodes(@NonNull final TokenContext context) {
         final long reservedStakingRewards = stakingRewardsStore.pendingRewards();
         final long unreservedStakingRewardBalance = rewardAccountBalance - reservedStakingRewards;
         final var syntheticNodeStakeUpdateTxn = newNodeStakeUpdateBuilder(
-                        lastInstantOfPreviousPeriodFor(consensusTime),
-                        finalNodeStakes,
-                        stakingConfig,
-                        totalStakedRewardStart,
-                        perHbarRate,
-                        reservedStakingRewards,
-                        unreservedStakingRewardBalance,
-                        stakingConfig.rewardBalanceThreshold(),
-                        stakingConfig.maxStakeRewarded())
-                .memo("End of staking period calculation record");
+                lastInstantOfPreviousPeriodFor(consensusTime),
+                finalNodeStakes,
+                stakingConfig,
+                totalStakedRewardStart,
+                perHbarRate,
+                reservedStakingRewards,
+                unreservedStakingRewardBalance,
+                stakingConfig.rewardBalanceThreshold(),
+                stakingConfig.maxStakeRewarded());
         log.info("Exporting:\n{}", finalNodeStakes);
         // We don't want to fail adding the preceding child record for the node stake update that happens every
         // midnight. So, we add the preceding child record builder as unchecked, that doesn't fail with
         // MAX_CHILD_RECORDS_EXCEEDED
         final var nodeStakeUpdateBuilder =
                 context.addUncheckedPrecedingChildRecordBuilder(NodeStakeUpdateRecordBuilder.class);
-        nodeStakeUpdateBuilder.transaction(Transaction.newBuilder()
-                .body(syntheticNodeStakeUpdateTxn.build())
-                .build());
+        nodeStakeUpdateBuilder
+                .transaction(Transaction.newBuilder()
+                        .body(syntheticNodeStakeUpdateTxn.build())
+                        .build())
+                .memo("End of staking period calculation record");
     }
 
     /**

hedera-node/hedera-token-service-impl/src/test/java/com/hedera/node/app/service/token/impl/test/fixtures/FakeNodeStakeUpdateRecordBuilder.java

@@ -24,6 +24,7 @@ public class FakeNodeStakeUpdateRecordBuilder {
 
     public NodeStakeUpdateRecordBuilder create() {
         return new NodeStakeUpdateRecordBuilder() {
+            private String memo;
             private Transaction txn;
 
             @NotNull
@@ -32,6 +33,13 @@ public NodeStakeUpdateRecordBuilder transaction(@NotNull final Transaction txn)
                 this.txn = txn;
                 return this;
             }
+
+            @NotNull
+            @Override
+            public NodeStakeUpdateRecordBuilder memo(@NotNull String memo) {
+                this.memo = memo;
+                return this;
+            }
         };
     }
 }

hedera-node/hedera-token-service/src/main/java/com/hedera/node/app/service/token/records/NodeStakeUpdateRecordBuilder.java

@@ -31,4 +31,13 @@ public interface NodeStakeUpdateRecordBuilder {
      */
     @NonNull
     NodeStakeUpdateRecordBuilder transaction(@NonNull final Transaction transaction);
+
+    /**
+     * Sets the record's memo.
+     *
+     * @param memo the memo
+     * @return the builder
+     */
+    @NonNull
+    NodeStakeUpdateRecordBuilder memo(@NonNull final String memo);
 }