Add some typehint

Author: 94noni

controller/service.rst

@@ -31,14 +31,15 @@ apply the ``controller.service_arguments`` tag to your controller services::
     // src/Controller/HelloController.php
     namespace App\Controller;
 
+    use Symfony\Component\HttpFoundation\Response;
     use Symfony\Component\HttpKernel\Attribute\AsController;
     use Symfony\Component\Routing\Annotation\Route;
 
     #[AsController]
     class HelloController
     {
         #[Route('/hello', name: 'hello', methods: ['GET'])]
-        public function index()
+        public function index(): Response
         {
             // ...
         }
@@ -71,7 +72,7 @@ a service like: ``App\Controller\HelloController::index``:
             /**
              * @Route("/hello", name="hello", methods={"GET"})
              */
-            public function index()
+            public function index(): Response
             {
                 // ...
             }
@@ -82,12 +83,13 @@ a service like: ``App\Controller\HelloController::index``:
         // src/Controller/HelloController.php
         namespace App\Controller;
 
+        use Symfony\Component\HttpFoundation\Response;
         use Symfony\Component\Routing\Annotation\Route;
 
         class HelloController
         {
             #[Route('/hello', name: 'hello', methods: ['GET'])]
-            public function index()
+            public function index(): Response
             {
                 // ...
             }
@@ -151,7 +153,7 @@ which is a common practice when following the `ADR pattern`_
          */
         class Hello
         {
-            public function __invoke($name = 'World')
+            public function __invoke(string $name = 'World'): Response
             {
                 return new Response(sprintf('Hello %s!', $name));
             }
@@ -168,7 +170,7 @@ which is a common practice when following the `ADR pattern`_
         #[Route('/hello/{name}', name: 'hello')]
         class Hello
         {
-            public function __invoke($name = 'World')
+            public function __invoke(string $name = 'World'): Response
             {
                 return new Response(sprintf('Hello %s!', $name));
             }
@@ -228,14 +230,14 @@ service and use it directly::
 
     class HelloController
     {
-        private $twig;
+        private Environment $twig;
 
         public function __construct(Environment $twig)
         {
             $this->twig = $twig;
         }
 
-        public function index($name)
+        public function index(string $name): Response
         {
             $content = $this->twig->render(
                 'hello/index.html.twig',