public static function cls($class, $since = null, $suggest = null): void
    {
        if ($suggest && preg_match('/\s/', $suggest) === 0) {
            $suggest = ltrim($suggest, '\\');
            $suggest = "Use ${suggest} instead.";
        }
        $class = ltrim($class, '\\');

        static::warn($class, $since, $suggest);
    }