fix ecs

src/EventListener/DataContainer/TimelineElementListeners.php

@@ -1,5 +1,21 @@
 <?php
 
+declare(strict_types=1);
+
+/*
+ * Animated timeline bundle for Contao Open Source CMS
+ *
+ * Copyright (c) 2024 pdir / digital agentur // pdir GmbH
+ *
+ * @package    animated-timeline-bundle
+ * @link       https://pdir.de
+ * @license    LGPL-3.0+
+ * @author     Philipp Seibt <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace Pdir\AnimatedTimelineBundle\EventListener\DataContainer;
 
 use Contao\CoreBundle\DependencyInjection\Attribute\AsCallback;