docs: function (options) {
                  var dataModel = this._dataModel;
                  // normalize labels to lowerCase
                  var sz = options.length, item;
                  for (var i = 0; sz > i; i++) {
                      item = options[i];
                      item[this.LABEL_META] = item.label.toLowerCase();
                  }
                  jsonUtils.setValue(dataModel, 'listContent', options);
                  this._setDisplayIdx(0);
              }