private void maybeForceBuilderInitialization() {
      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {
        getNormalizedBoundingBoxFieldBuilder();
        getTimeOffsetFieldBuilder();
        getAttributesFieldBuilder();
        getLandmarksFieldBuilder();
      }
    }
<pre>
For tracking related features.
An object at time_offset with attributes, and located with
normalized_bounding_box.
</pre>

Protobuf type {@code google.cloud.videointelligence.v1.TimestampedObject}
java-video-intelligence/proto-google-cloud-video-intelligence-v1/src/main/java/com/google/cloud/videointelligence/v1/TimestampedObject.java