/**
* @param Menu $menu
*
* @return Menu
*/
public function extendWith(Menu $menu)
{
$container = m::mock('Illuminate\\Contracts\\Container\\Container');
$group = new DefaultGroup($container);
$group->name('new from extender');
$menu->addGroup($group);
$group = new DefaultGroup($container);
$group->name('original');
$menu->addGroup($group);
return $menu;
}