public function is($roles)
	{
		if (!$this->user())
		{
			return false;
		}

		$userRoles = $this->getUser()->roles;

		foreach ((array)$roles as $role)
		{
			if (in_array(mb_strtolower($role), $userRoles)
				|| in_array($role, $userRoles)
			)
			{
				return true;
			}
		}

		return false;
	}