docs: function(className, data, callback) {
          /**
           * Callback for QB.data.create(className, data, callback)
           * @callback createDataCallback
           * @param {object} error - The error object
           * @param {object} response - An object
           */
          var ajaxParams = {
              'type': 'POST',
              'data': data,
              'isNeedStringify': true,
              'contentType': 'application/json; charset=utf-8',
              'url': Utils.getUrl(config.urls.data, className)
          };
  
          this.service.ajax(ajaxParams, function(err,res) {
              if (err) {
                  callback(err, null);
              } else {
                  callback (err, res);
              }
          });
      }