public com.google.protobuf.TimestampOrBuilder getUpdateTimeOrBuilder() {
      if (updateTimeBuilder_ != null) {
        return updateTimeBuilder_.getMessageOrBuilder();
      } else {
        return updateTime_ == null
            ? com.google.protobuf.Timestamp.getDefaultInstance()
            : updateTime_;
      }
    }
<pre>
Latest update time of the operation.
</pre>

<code>.google.protobuf.Timestamp update_time = 3;</code>
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/SubmitUriMetadata.java