setCurrentItem(current) {
      const currentItemIndex = this._getItems().indexOf(current);
      if (currentItemIndex === -1) {
        console.warn(`The provided item is not managed by ItemNavigation`, current); // eslint-disable-line
        return;
      }
      this._currentIndex = currentItemIndex;
      this._applyTabIndex();
    }
Call this method to set a new "current" (selected) item in the item navigation
Note: the item passed to this function must be one of the items, returned by the getItemsCallback function

@public
@param current the new selected item