Initial Drupal 11 with DDEV setup

vendor/symfony/dependency-injection/Loader/Configurator/Traits/AbstractTrait.php

@@ -0,0 +1,28 @@
+<?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\DependencyInjection\Loader\Configurator\Traits;
+
+trait AbstractTrait
+{
+    /**
+     * Whether this definition is abstract, that means it merely serves as a
+     * template for other definitions.
+     *
+     * @return $this
+     */
+    final public function abstract(bool $abstract = true): static
+    {
+        $this->definition->setAbstract($abstract);
+
+        return $this;
+    }
+}