use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;

 class ReplaceFormCreateViewFunctionCall extends AbstractController
 {
     public function form(): Response
     {
         return $this->render('form.html.twig', [
-            'form' => $form->createView(),
+            'form' => $form,
         ]);
     }
 }

-use Sensio\Bundle\FrameworkExtraBundle\Configuration\Security;
+use Symfony\Component\ExpressionLanguage\Expression;
+use Symfony\Component\Security\Http\Attribute\IsGranted;

 class PostController extends Controller
 {
-    #[Security("is_granted('ROLE_ADMIN')")]
+    #[IsGranted('ROLE_ADMIN')]
     public function index()
     {
     }

-    #[Security("is_granted('ROLE_ADMIN') and is_granted('ROLE_FRIENDLY_USER')")]
+    #[IsGranted(new Expression("is_granted('ROLE_ADMIN') and is_granted('ROLE_FRIENDLY_USER')"))]
     public function list()
     {
     }
 }

-use Symfony\Component\Messenger\Handler\MessageHandlerInterface;
+use Symfony\Component\Messenger\Attribute\AsMessageHandler;

-class SmsNotificationHandler implements MessageHandlerInterface
+#[AsMessageHandler]
+class SmsNotificationHandler
 {
     public function __invoke(SmsNotification $message)
     {
         // ... do some work - like sending an SMS message!
     }
 }

-use Symfony\Component\Messenger\Handler\MessageSubscriberInterface;
+use Symfony\Component\Messenger\Attribute\AsMessageHandler;

-class SmsNotificationHandler implements MessageSubscriberInterface
+class SmsNotificationHandler
 {
-    public function __invoke(SmsNotification $message)
+    #[AsMessageHandler]
+    public function handleSmsNotification(SmsNotification $message)
     {
         // ...
     }

+    #[AsMessageHandler(priority: 0, bus: 'messenger.bus.default']
     public function handleOtherSmsNotification(OtherSmsNotification $message)
     {
         // ...
-    }
-
-    public static function getHandledMessages(): iterable
-    {
-        // handle this message on __invoke
-        yield SmsNotification::class;
-
-        // also handle this message on handleOtherSmsNotification
-        yield OtherSmsNotification::class => [
-            'method' => 'handleOtherSmsNotification',
-            'priority' => 0,
-            'bus' => 'messenger.bus.default',
-        ];
     }
 }

+use Symfony\Bridge\Doctrine\Attribute\MapEntity;
+
 class SomeController
 {
-    #[ParamConverter('post', options: ['mapping' => ['date' => 'date', 'slug' => 'slug']])]
-    #[ParamConverter('comment', options: ['mapping' => ['comment_slug' => 'slug']])]
     public function showComment(
+        #[MapEntity(mapping: ['date' => 'date', 'slug' => 'slug'])]
         Post $post,

+        #[MapEntity(mapping: ['comment_slug' => 'slug'])]
         Comment $comment
     ) {
     }
 }

-use Symfony\Component\HttpKernel\Controller\ArgumentValueResolverInterface;
+use Symfony\Component\HttpKernel\Controller\ValueResolverInterface;

-final class EntityValueResolver implements ArgumentValueResolverInterface
+final class EntityValueResolver implements ValueResolverInterface
 {
-    public function supports(Request $request, ArgumentMetadata $argument): bool
-    {
-    }
-
     public function resolve(Request $request, ArgumentMetadata $argument): iterable
     {
     }
 }