public Builder clearTrackInfo() {
      trackInfoCase_ = 0;
      trackInfo_ = null;
      onChanged();
      return this;
    }
<pre>
Annotations corresponding to one tracked object.
</pre>

Protobuf type {@code google.cloud.videointelligence.v1p2beta1.ObjectTrackingAnnotation}
java-video-intelligence/proto-google-cloud-video-intelligence-v1p2beta1/src/main/java/com/google/cloud/videointelligence/v1p2beta1/ObjectTrackingAnnotation.java