@BetaApi
  public final OperationsClient getHttpJsonOperationsClient() {
    return httpJsonOperationsClient;
  }
Returns the OperationsClient that can be used to query the status of a long-running operation
returned by another API method call.
java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/WarehouseClient.java