private com.google.protobuf.SingleFieldBuilderV3<
              com.google.cloud.visionai.v1.VideoObjectTrackingPredictionResult.BoundingBox,
              com.google.cloud.visionai.v1.VideoObjectTrackingPredictionResult.BoundingBox.Builder,
              com.google.cloud.visionai.v1.VideoObjectTrackingPredictionResult.BoundingBoxOrBuilder>
          getBoundingBoxFieldBuilder() {
        if (boundingBoxBuilder_ == null) {
          boundingBoxBuilder_ =
              new com.google.protobuf.SingleFieldBuilderV3<
                  com.google.cloud.visionai.v1.VideoObjectTrackingPredictionResult.BoundingBox,
                  com.google.cloud.visionai.v1.VideoObjectTrackingPredictionResult.BoundingBox
                      .Builder,
                  com.google.cloud.visionai.v1.VideoObjectTrackingPredictionResult
                      .BoundingBoxOrBuilder>(getBoundingBox(), getParentForChildren(), isClean());
          boundingBox_ = null;
        }
        return boundingBoxBuilder_;
      }
<pre>
Boundingbox.
</pre>

<code>
.google.cloud.visionai.v1.VideoObjectTrackingPredictionResult.BoundingBox bounding_box = 3;
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/VideoObjectTrackingPredictionResult.java