public Builder mergeObjectTrackingConfig(
        com.google.cloud.videointelligence.v1.ObjectTrackingConfig value) {
      if (objectTrackingConfigBuilder_ == null) {
        if (((bitField0_ & 0x00000100) != 0)
            && objectTrackingConfig_ != null
            && objectTrackingConfig_
                != com.google.cloud.videointelligence.v1.ObjectTrackingConfig
                    .getDefaultInstance()) {
          getObjectTrackingConfigBuilder().mergeFrom(value);
        } else {
          objectTrackingConfig_ = value;
        }
      } else {
        objectTrackingConfigBuilder_.mergeFrom(value);
      }
      if (objectTrackingConfig_ != null) {
        bitField0_ |= 0x00000100;
        onChanged();
      }
      return this;
    }
<pre>
Config for OBJECT_TRACKING.
</pre>

<code>.google.cloud.videointelligence.v1.ObjectTrackingConfig object_tracking_config = 13;
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1/src/main/java/com/google/cloud/videointelligence/v1/VideoContext.java