Storm\Utilities\Cache\MemoryCache::GetExpiryTime PHP Метод

    private function GetExpiryTime($ExpirySeconds)
    {
        if ($ExpirySeconds === false) {
            return null;
        }
        $Negative = $ExpirySeconds < 0;
        $ExpirySeconds = abs($ExpirySeconds);
        $ExpiryInterval = new \DateInterval('PT' . $ExpirySeconds . 'S');
        if ($Negative) {
            $ExpiryInterval->invert = 1;
        }
        return $this->Now()->add($ExpiryInterval);
    }