public Builder addObjectAnnotations(
        com.google.cloud.videointelligence.v1p3beta1.ObjectTrackingAnnotation value) {
      if (objectAnnotationsBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureObjectAnnotationsIsMutable();
        objectAnnotations_.add(value);
        onChanged();
      } else {
        objectAnnotationsBuilder_.addMessage(value);
      }
      return this;
    }
<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