update

vendor/symfony/event-dispatcher/LegacyEventProxy.php

@@ -0,0 +1,62 @@
+<?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\EventDispatcher;
+
+use Psr\EventDispatcher\StoppableEventInterface;
+use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
+
+/**
+ * @internal to be removed in 5.0.
+ */
+final class LegacyEventProxy extends Event
+{
+    private $event;
+
+    /**
+     * @param object $event
+     */
+    public function __construct($event)
+    {
+        $this->event = $event;
+    }
+
+    /**
+     * @return object $event
+     */
+    public function getEvent()
+    {
+        return $this->event;
+    }
+
+    public function isPropagationStopped(): bool
+    {
+        if (!$this->event instanceof ContractsEvent && !$this->event instanceof StoppableEventInterface) {
+            return false;
+        }
+
+        return $this->event->isPropagationStopped();
+    }
+
+    public function stopPropagation()
+    {
+        if (!$this->event instanceof ContractsEvent) {
+            return;
+        }
+
+        $this->event->stopPropagation();
+    }
+
+    public function __call($name, $args)
+    {
+        return $this->event->{$name}(...$args);
+    }
+}