/**
  * Gets timestamp from date
  * @param $date
  * @return int
  */
 private function getDateTimestamp($date)
 {
     return SchedulerHelperDate::getDateTimestamp($date, $this->config["server_date"]);
 }
 /**
  * Get max recurring end date for recurring type.
  * @param $recurringType
  * @param $startDateStr
  * @param $eventLength
  * @return int
  */
 public function getRecurringEndDateStr($recurringType, $startDateStr, $eventLength)
 {
     $endDateStamp = RecurringType::getRecurringEndDate($recurringType, SchedulerHelperDate::getDateTimestamp($startDateStr), $eventLength);
     return date(SchedulerHelperDate::FORMAT_DEFAULT, $endDateStamp);
 }