private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.videointelligence.v1.ObjectTrackingAnnotation,
            com.google.cloud.videointelligence.v1.ObjectTrackingAnnotation.Builder,
            com.google.cloud.videointelligence.v1.ObjectTrackingAnnotationOrBuilder>
        getObjectAnnotationsFieldBuilder() {
      if (objectAnnotationsBuilder_ == null) {
        objectAnnotationsBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.videointelligence.v1.ObjectTrackingAnnotation,
                com.google.cloud.videointelligence.v1.ObjectTrackingAnnotation.Builder,
                com.google.cloud.videointelligence.v1.ObjectTrackingAnnotationOrBuilder>(
                objectAnnotations_,
                ((bitField0_ & 0x00002000) != 0),
                getParentForChildren(),
                isClean());
        objectAnnotations_ = null;
      }
      return objectAnnotationsBuilder_;
    }
<pre>
Annotations for list of objects detected and tracked in video.
</pre>

<code>
repeated .google.cloud.videointelligence.v1.ObjectTrackingAnnotation object_annotations = 14;
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1/src/main/java/com/google/cloud/videointelligence/v1/VideoAnnotationResults.java