Address review feedback: remove XML block and document wildcard attributes

Author: lacatoire

reference/events.rst

@@ -81,6 +81,9 @@ controller:
         // get all attributes, grouped by class name
         $allAttributes = $event->getAttributes();
 
+        // get all attributes as a flat list (not grouped)
+        $flatAttributes = $event->getAttributes('*');
+
         // get attributes of a specific class
         $cacheAttributes = $event->getAttributes(Cache::class);
     }
@@ -201,6 +204,9 @@ on the controller that handled the request:
         // get all controller attributes, grouped by class name
         $allAttributes = $event->getControllerAttributes();
 
+        // get all controller attributes as a flat list (not grouped)
+        $flatAttributes = $event->getControllerAttributes('*');
+
         // get attributes of a specific class
         $cacheAttributes = $event->getControllerAttributes(Cache::class);
     }

service_container.rst

@@ -271,19 +271,6 @@ You can limit service registration to specific environments as follows:
             services:
                 App\Service\AnotherClass: ~
 
-    .. code-block:: xml
-
-        <!-- config/services.xml -->
-        <services>
-            <service id="App\Service\SomeClass"/>
-
-            <when env="dev">
-                <services>
-                    <service id="App\Service\AnotherClass"/>
-                </services>
-            </when>
-        </services>
-
     .. code-block:: php
 
         // config/services.php