/**
  * Normalize wrapper to serialize with xml
  * Event class name is added
  *
  * @param XmlSerializationVisitor $visitor
  * @param EventContainer          $container
  * @param array                   $type
  * @param Context                 $context
  */
 public function serializeContainerXml(XmlSerializationVisitor $visitor, EventContainer $container, array $type, Context $context)
 {
     if (!$visitor->getDocument()) {
         /** @var ClassMetadata $metadata */
         $metadata = $context->getMetadataFactory()->getMetadataForClass(__NAMESPACE__ . '\\EventContainer');
         $metadata->xmlRootName = 'event';
         $visitor->startVisitingObject($metadata, $container, [], $context);
         //            $visitor->visitArray([], ['name' => 'array'], $context);
     }
     $event = $container->getEvent();
     $node = $visitor->getCurrentNode();
     $node->setAttribute('type', $this->namingStrategy->classToType(get_class($event)));
     $data = $visitor->getDocument()->createElement('data');
     $visitor->getCurrentNode()->appendChild($data);
     $visitor->setCurrentNode($data);
     $visitor->getNavigator()->accept($event, null, $context);
     $visitor->revertCurrentNode();
 }