@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      segment_ = null;
      if (segmentBuilder_ != null) {
        segmentBuilder_.dispose();
        segmentBuilder_ = null;
      }
      if (timestampedObjectsBuilder_ == null) {
        timestampedObjects_ = java.util.Collections.emptyList();
      } else {
        timestampedObjects_ = null;
        timestampedObjectsBuilder_.clear();
      }
      bitField0_ = (bitField0_ & ~0x00000002);
      if (attributesBuilder_ == null) {
        attributes_ = java.util.Collections.emptyList();
      } else {
        attributes_ = null;
        attributesBuilder_.clear();
      }
      bitField0_ = (bitField0_ & ~0x00000004);
      confidence_ = 0F;
      return this;
    }
<pre>
A track of an object instance.
</pre>

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