docs: function (res, cb) {
              if (res.downloadFailed) {
                  this.__onFailure(res, cb.args);
              } else {
                  var fileContent = ariaCoreDownloadMgr.getFileContent(res.logicalPaths[0]);
                  var responseJSON = ariaUtilsJson.load(fileContent);
                  if (responseJSON) {
                      this.$callback(cb, responseJSON);
                  } else {
                      this.__onFailure(res, cb.args);
                  }
              }
          }