public function loadClassMetadata(LoadClassMetadataEventArgs $eventArgs)
 {
     $metadata = $eventArgs->getClassMetaData();
     /** @var $reflectionClass \ReflectionClass */
     $reflectionClass = $metadata->getReflectionClass();
     if ($reflectionClass->implementsInterface(RoutingDiscriminatorsAwareInterface::class)) {
         $metadata->setDiscriminatorMap($this->routingDiscriminatorMap);
     }
 }