public static function unpatch()
    {
        if (!static::$_interceptor) {
            return true;
        }
        $patchers = static::$_interceptor->patchers();
        $patchers->remove('filter');
        static::$_interceptor = null;

        if (static::$_unpatch) {
            static::$_unpatch = false;
            return Interceptor::unpatch();
        }
        return true;
    }