@java.lang.Override
      public Builder clear() {
        super.clear();
        bitField0_ = 0;
        trackId_ = "";
        startTime_ = null;
        if (startTimeBuilder_ != null) {
          startTimeBuilder_.dispose();
          startTimeBuilder_ = null;
        }
        return this;
      }
<pre>
The track info for annotations from occupancy counting operator.
</pre>

Protobuf type {@code google.cloud.visionai.v1.OccupancyCountingPredictionResult.TrackInfo}
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/OccupancyCountingPredictionResult.java