public static function nocache(): bool
    {
        if (!headers_sent()) {
            header('Expires: Wed, 11 Jan 1984 05:00:00 GMT');
            header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
            header('Cache-Control: no-cache, must-revalidate, max-age=0');
            header('Pragma: no-cache');

            return true;
        }

        return false;
    }