private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vmmigration.v1.ReplicationSync,
            com.google.cloud.vmmigration.v1.ReplicationSync.Builder,
            com.google.cloud.vmmigration.v1.ReplicationSyncOrBuilder>
        getLastSyncFieldBuilder() {
      if (lastSyncBuilder_ == null) {
        lastSyncBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vmmigration.v1.ReplicationSync,
                com.google.cloud.vmmigration.v1.ReplicationSync.Builder,
                com.google.cloud.vmmigration.v1.ReplicationSyncOrBuilder>(
                getLastSync(), getParentForChildren(), isClean());
        lastSync_ = null;
      }
      return lastSyncBuilder_;
    }
<pre>
Output only. The most updated snapshot created time in the source that
finished replication.
</pre>

<code>
.google.cloud.vmmigration.v1.ReplicationSync last_sync = 11 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/MigratingVm.java