public static function slug($text = '', $isCache = false): string
    {
        static $cache = [];

        if (!$isCache) {
            return Slug::filter($text);
        }

        if (!array_key_exists($text, $cache)) { // Not Arr::key() for performance
            $cache[$text] = Slug::filter($text);
        }

        return $cache[$text];
    }