docs: function (id, callback) {
          /**
           * Callback for QB.content.getInfo(id, callback)
           * @callback getFileInfoByIdCallback
           * @param {object} error - The error object
           * @param {object} response - The file object (blob-object-access)
           */
          this.service.ajax({url: Utils.getUrl(config.urls.blobs, id)}, function (err, res) {
              if (err) {
                  callback (err, null);
              } else {
                  callback (null, res);
              }
          });
      }