@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(inputUri_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, inputUri_);
    }
    if (progressPercent_ != 0) {
      output.writeInt32(2, progressPercent_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(3, getStartTime());
    }
    if (((bitField0_ & 0x00000002) != 0)) {
      output.writeMessage(4, getUpdateTime());
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Output only. Time of the most recent update.
</pre>

<code>.google.protobuf.Timestamp update_time = 4;</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1p1beta1/src/main/java/com/google/cloud/videointelligence/v1p1beta1/VideoAnnotationProgress.java