@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    for (int i = 0; i < shotAnnotations_.size(); i++) {
      output.writeMessage(1, shotAnnotations_.get(i));
    }
    for (int i = 0; i < labelAnnotations_.size(); i++) {
      output.writeMessage(2, labelAnnotations_.get(i));
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(3, getExplicitAnnotation());
    }
    for (int i = 0; i < objectAnnotations_.size(); i++) {
      output.writeMessage(4, objectAnnotations_.get(i));
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Object tracking results.
</pre>

<code>
repeated .google.cloud.videointelligence.v1p3beta1.ObjectTrackingAnnotation object_annotations = 4;
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1p3beta1/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingVideoAnnotationResults.java