@java.lang.Override
    public int getSerializedSize() {
      int size = memoizedSize;
      if (size != -1) return size;

      size = 0;
      if (rdbSnapshotPeriod_
          != com.google.cloud.memorystore.v1.PersistenceConfig.RDBConfig.SnapshotPeriod
              .SNAPSHOT_PERIOD_UNSPECIFIED
              .getNumber()) {
        size += com.google.protobuf.CodedOutputStream.computeEnumSize(1, rdbSnapshotPeriod_);
      }
      if (((bitField0_ & 0x00000001) != 0)) {
        size +=
            com.google.protobuf.CodedOutputStream.computeMessageSize(2, getRdbSnapshotStartTime());
      }
      size += getUnknownFields().getSerializedSize();
      memoizedSize = size;
      return size;
    }
<pre>
Optional. Time that the first snapshot was/will be attempted, and to
which future snapshots will be aligned. If not provided, the current time
will be used.
</pre>

<code>
.google.protobuf.Timestamp rdb_snapshot_start_time = 2 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/PersistenceConfig.java