public static function getCurrentTimeStamp(): string
	{
		$t = microtime(true);
		$micro = sprintf('%06d', ($t - floor($t)) * 1000000);
		$d = new DateTime(date('Y-m-d H:i:s.' . $micro, (int) $t));
		return $d->format('Y_m_d_H_i_s_u');
	}