public Builder clearEntity() {
      bitField0_ = (bitField0_ & ~0x00000004);
      entity_ = null;
      if (entityBuilder_ != null) {
        entityBuilder_.dispose();
        entityBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Entity to specify the object category that this track is labeled as.
</pre>

<code>.google.cloud.videointelligence.v1p3beta1.Entity entity = 1;</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1p3beta1/src/main/java/com/google/cloud/videointelligence/v1p3beta1/ObjectTrackingAnnotation.java