Add vendor and .env to make usable

vendor/symfony/http-kernel/Tests/Fixtures/Controller/NullableController.php

@@ -0,0 +1,19 @@
+<?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\Tests\Fixtures\Controller;
+
+class NullableController
+{
+    public function action(?string $foo, ?\stdClass $bar, ?string $baz = 'value', $mandatory)
+    {
+    }
+}