public function getScheduleDelay()
{
$value = $this->getSchedule();
if (null === $value) {
return -1;
}
$object = CronExpression::factory($value);
$format = 'Y-m-d H:i:s';
$timeFirst = strtotime($object->getNextRunDate()->format($format));
$timeSecond = strtotime(date($format));
return (int) $timeFirst - $timeSecond;
}