Add a code example for an imported route with the locale parameter

Author: nicwortel

routing.rst

@@ -2422,7 +2422,47 @@ with a locale. This can be done by defining a different prefix for each locale
     is set on any of the imported routes, that route will only be available
     with the prefix for that locale. This is useful when you want to import
     a collection of routes which contains a route that should only exist
-    in one of the locales.
+    in one of the locales:
+
+    .. configuration-block::
+
+        .. code-block:: php-annotations
+
+            // src/Controller/CompanyController.php
+            namespace App\Controller;
+
+            use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+            use Symfony\Component\HttpFoundation\Response;
+            use Symfony\Component\Routing\Annotation\Route;
+
+            class CompanyController extends AbstractController
+            {
+                /**
+                 * @Route("/about-us/en-only", locale="en", name="about_us")
+                 */
+                public function about(): Response
+                {
+                    // ...
+                }
+            }
+
+        .. code-block:: php-attributes
+
+            // src/Controller/CompanyController.php
+            namespace App\Controller;
+
+            use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+            use Symfony\Component\HttpFoundation\Response;
+            use Symfony\Component\Routing\Annotation\Route;
+
+            class CompanyController extends AbstractController
+            {
+                #[Route('/about-us/en-only', locale: 'en', name: 'about_us')]
+                public function about(): Response
+                {
+                    // ...
+                }
+            }
 
 Another common requirement is to host the website on a different domain
 according to the locale. This can be done by defining a different host for each