[Doctrine] Add documentation about Doctrine AsEventListener

.doctor-rst.yaml

@@ -80,6 +80,7 @@ whitelist:
         - 'The bin/console Command'
         - '# username is your full Gmail or Google Apps email address'
         - '.. _`LDAP injection`: http://projects.webappsec.org/w/page/13246947/LDAP%20Injection'
+        - '.. versionadded:: 2.7.2' # Doctrine
         - '.. versionadded:: 1.9.0' # Encore
         - '.. versionadded:: 0.28.4' # Encore
         - '.. versionadded:: 2.4.0' # SwiftMailer

doctrine/events.rst

@@ -149,6 +149,23 @@ with the ``doctrine.event_listener`` tag:
 
 .. configuration-block::
 
+    .. code-block:: attribute
+
+        // src/App/EventListener/SearchIndexer.php
+        namespace App\EventListener;
+
+        use Doctrine\Bundle\DoctrineBundle\Attribute\AsEventListener;
+        use Doctrine\ORM\Event\LifecycleEventArgs;
+
+        #[AsEventListener('postPersist'/*, 500, 'default'*/)]
+        class SearchIndexer
+        {
+            public function postPersist(LifecycleEventArgs $event): void
+            {
+                // ...
+            }
+        }
+
     .. code-block:: yaml
 
         # config/services.yaml
@@ -219,6 +236,12 @@ with the ``doctrine.event_listener`` tag:
             ;
         };
 
+
+.. versionadded:: 2.7.2
+
+    The :class:`Doctrine\\Bundle\\DoctrineBundle\\Attribute\\AsEventListener` 
+    attribute was introduced in DoctrineBundle 2.7.2.
+
 .. tip::
 
     Symfony loads (and instantiates) Doctrine listeners only when the related