/**
  * Update end time of delivery execution
  */
 private function updateEndTime()
 {
     $finishTime = $this->deliveryExecution->getFinishTime();
     if ($finishTime) {
         list($usec, $sec) = explode(" ", $this->deliveryExecution->getFinishTime());
         $finishTime = (double) $usec + (double) $sec;
     } else {
         $finishTime = '';
     }
     $this->addValue(DeliveryMonitoringService::END_TIME, $finishTime, true);
 }