code: public com.google.cloud.datalabeling.v1beta1.LabelImageBoundingBoxOperationMetadata
        getImageBoundingBoxDetails() {
      if (detailsCase_ == 4) {
        return (com.google.cloud.datalabeling.v1beta1.LabelImageBoundingBoxOperationMetadata)
            details_;
      }
      return com.google.cloud.datalabeling.v1beta1.LabelImageBoundingBoxOperationMetadata
          .getDefaultInstance();
    }
docs: <code>
  .google.cloud.datalabeling.v1beta1.LabelImageBoundingBoxOperationMetadata image_bounding_box_details = 4;
  </code>