code: function(id) {
          var item = Selectivity.findNestedById(this.results, id);
          if (item && !item.disabled && item.selectable !== false) {
              var options = { id: id, item: item };
              if (this.selectivity.triggerEvent('selectivity-selecting', options)) {
                  this.selectivity.triggerEvent('selectivity-selected', options);
              }
          }
      }
docs: Selects the item with the given ID.
  
  @param id ID of the item to select.