add a discrimnator type on onbjects

src/Bundle/ChillMainBundle/Serializer/Normalizer/UserNormalizer.php

@@ -24,7 +24,7 @@ use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 
 /**
  *
- *
+ * @internal we keep this normalizer, because the property 'text' may be replace by a rendering in the future
  */
 class UserNormalizer implements NormalizerInterface
 {
@@ -32,8 +32,10 @@ class UserNormalizer implements NormalizerInterface
     {
         /** @var User $user */
         return [
+            'type' => 'user',
             'id' => $user->getId(),
-            'username' => $user->getUsername()
+            'username' => $user->getUsername(),
+            'text' => $user->getUsername()
         ];
     }