@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      normalizedBoundingBox_ = null;
      if (normalizedBoundingBoxBuilder_ != null) {
        normalizedBoundingBoxBuilder_.dispose();
        normalizedBoundingBoxBuilder_ = null;
      }
      timeOffset_ = null;
      if (timeOffsetBuilder_ != null) {
        timeOffsetBuilder_.dispose();
        timeOffsetBuilder_ = null;
      }
      if (attributesBuilder_ == null) {
        attributes_ = java.util.Collections.emptyList();
      } else {
        attributes_ = null;
        attributesBuilder_.clear();
      }
      bitField0_ = (bitField0_ & ~0x00000004);
      if (landmarksBuilder_ == null) {
        landmarks_ = java.util.Collections.emptyList();
      } else {
        landmarks_ = null;
        landmarksBuilder_.clear();
      }
      bitField0_ = (bitField0_ & ~0x00000008);
      return this;
    }
<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