default services conflit ?

old.vendor/symfony/http-kernel/Event/ControllerEvent.php

@@ -0,0 +1,29 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\Event;
+
+/**
+ * Allows filtering of a controller callable.
+ *
+ * You can call getController() to retrieve the current controller. With
+ * setController() you can set a new controller that is used in the processing
+ * of the request.
+ *
+ * Controllers should be callables.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ *
+ * @final since Symfony 4.4
+ */
+class ControllerEvent extends FilterControllerEvent
+{
+}