code: public void inflateOverflowMenu(int menuId) {
          mMenuId = menuId;
          mMenuView.reset(menuId, actionMenuAvailWidth());
          if (mIsFocused) {
              mMenuView.hideIfRoomItems(false);
          }
      }
docs: Inflates the menu items from
  an xml resource.
  
  @param menuId a menu xml resource reference