code: function(item, options) {
          toggleClass(this.$(HIGHLIGHT_SELECTOR), HIGHLIGHT_CLASS, false);
          toggleClass(this.$(getItemSelector(RESULT_ITEM_SELECTOR, item.id)), HIGHLIGHT_CLASS, true);
  
          this.highlightedResult = item;
          this.loadMoreHighlighted = false;
  
          this.selectivity.triggerEvent('selectivity-highlight', {
              item: item,
              id: item.id,
              reason: (options && options.reason) || 'unspecified'
          });
      }
docs: Highlights a result item.
  
  @param item The item to highlight.
  @param options Optional options object that may contain the following property:
  reason - The reason why the result item is being highlighted. Possible
  values: 'current_value', 'first_result', 'hovered'.