Merge branch '6.1' into 6.2

* 6.1:
  [Routing] Adding full example for a Service in Route Condition

Author: javiereguiluz

routing.rst

@@ -378,8 +378,28 @@ You can also use these functions:
 
 ``service(string $alias)``
     Returns a routing condition service.
-    You'll have to add the ``#[AsRoutingConditionService]`` attribute or ``routing.condition_service``
-    tag to your service if you want to use it in the condition.
+
+    First, add the ``#[AsRoutingConditionService]`` attribute or ``routing.condition_service``
+    tag to the services that you want to use in route conditions::
+
+        use Symfony\Bundle\FrameworkBundle\Routing\Attribute\AsRoutingConditionService;
+        use Symfony\Component\HttpFoundation\Request;
+
+        #[AsRoutingConditionService(alias: 'route_checker')]
+        class RouteChecker
+        {
+            public function check(Request $request): bool
+            {
+                // ...
+            }
+        }
+
+    Then, use the ``service()`` function to refer to that service inside conditions::
+
+        // Controller (using an alias):
+        #[Route(condition: "service('route_checker').check(request)")]
+        // Or without alias:
+        #[Route(condition: "service('Ap\\\Service\\\RouteChecker').check(request)")]
 
 .. versionadded:: 6.1