review

94noni · 94noni · commit f47dc1bb721c · 2022-01-03T13:22:43.000+01:00
diff --git a/messenger.rst b/messenger.rst
@@ -2295,8 +2295,10 @@ when building absolute URLs.
 
 
 Add the ``validation`` middleware if you need to validate the message object before handling it.
-Internally it uses the Symfony's validator. If validation fails, a ``ValidationFailedException``
-will be thrown that you can catch and read errors from.
+Internally it uses the Symfony's validator. The :class:`Symfony\\Component\\Messenger\\Stamp\\ValidationStamp` should
+be used to configure the validation groups. If validation fails,
+a ``ValidationFailedException`` will be thrown that you can catch
+and read errors from.
 
 
 Messenger Events
