code: private static ModelNode responseNodeOnly(OperationResponse or) {
          ModelNode result = or.getResponseNode();
          try {
              or.close();
          } catch (IOException e) {
              ControllerClientLogger.ROOT_LOGGER.debugf(e, "Caught exception closing %s whose associated streams, " +
                      "if any, were not wanted", or);
          }
          return result;
      }
docs: Extracts the response node from an OperationResponse and returns it after first closing the OperationResponse