public com.google.cloud.videointelligence.v1p3beta1.ObjectTrackingAnnotationOrBuilder
        getObjectAnnotationsOrBuilder(int index) {
      if (objectAnnotationsBuilder_ == null) {
        return objectAnnotations_.get(index);
      } else {
        return objectAnnotationsBuilder_.getMessageOrBuilder(index);
      }
    }
<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