User::loadById

static function loadById($id, array $with = array())
{
	if(isset(self::$loadedUsers[$id]))
	{
		return self::$loadedUsers[$id];
	}

	if(SystemUser::isSystemUserId($id))
	{
		self::$loadedUsers[$id] = SystemUser::create();
	}
	elseif(GuestUser::isGuestUserId($id))
	{
		self::$loadedUsers[$id] = GuestUser::create();
	}
	else
	{
		self::$loadedUsers[$id] = parent::loadById($id, $with);
	}

	return self::$loadedUsers[$id];
}