public int getLabelsCount() {
    return internalGetLabels().getMap().size();
  }
<pre>
Output only. The update time timestamp.
</pre>

<code>.google.protobuf.Timestamp update_time = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/Source.java