/**
  * @param Event $event
  * @param string $eventName
  * @return null
  * @throws InvalidServiceException
  */
 protected function getEventLogInfo(Event $event, $eventName)
 {
     if ($event instanceof EmbeddedEventResolverInterface) {
         return $event->getEventLogInfo($eventName);
     }
     if (null === ($eventResolver = $this->getResolver($eventName))) {
         return null;
     }
     return $eventResolver->getEventLogInfo($event, $eventName);
 }