Menu::setItem

protected function setItem($item)
{
	if ($item->isSuccess())
	{
		if (!array_key_exists($item->getId(), $this->items)
			|| $item instanceof MenuItemGroup)
		{
			$this->items[$item->getId()] = $item;
		}
		else
		{
			if ($this->items[$item->getId()] instanceof MenuItemItemUserFavorites)
			{
				$buffItem = $this->items[$item->getId()];
				$this->items[$item->getId()] = $item;
				$item = $buffItem;
			}
			$this->items[$item->getId()]->addStorage($item);
		}
	}
}