add constructor property promotion

add return type of methods

lib/Controller/AppController.php

@@ -29,28 +29,14 @@ use OCP\IUserSession;
 
 class AppController extends Controller
 {
-    /**
-     * @var ConfigProxy
-     */
-    protected $config;
-
-    /**
-     * @var AppRepository
-     */
-    protected $appRepository;
-
     public function __construct(
         string $appName,
         IRequest $request,
-        AppRepository $appRepository,
-        IURLGenerator $urlGenerator,
-        ConfigProxy $config
+        protected AppRepository $appRepository,
+        protected IURLGenerator $urlGenerator,
+        protected ConfigProxy $config
     ) {
         parent::__construct($appName, $request);
-
-        $this->appRepository = $appRepository;
-        $this->urlGenerator = $urlGenerator;
-        $this->config = $config;
     }
 
     /**