private function getCronTimestamp()
    {
        /* @var $version string e.g. "2.1.7" */
        $version = $this->productMetadata->getVersion();
        if (version_compare($version, '2.2.0') >= 0) {
            return $this->dateTime->gmtTimestamp();
        }
        return $this->timezone->scopeTimeStamp();
    }