docs: function(response, options) {
          if(options.callback) {
              var request = response.priv;
              if(request.status >= 200 && request.status < 300) {
                  // success
                  response.data = this.parseData(request);
                  response.code = OpenLayers.Protocol.Response.SUCCESS;
              } else {
                  // failure
                  response.code = OpenLayers.Protocol.Response.FAILURE;
              }
              options.callback.call(options.scope, response);
          }
      }