Added recursive code example

Author: markelca

tests/clapi/functional/resources/code/php/example/src/Course/Recursive.php

@@ -0,0 +1,66 @@
+<?php
+
+/*
+ * This file is part of the FOSRestBundle package.
+ *
+ * (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FOS\RestBundle\Controller;
+
+use FOS\RestBundle\View\ViewHandlerInterface;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+
+class Foo {}
+class Bar {}
+
+// Does the AbstractController::getSubscribedServices() method have a return type hint?
+if (true) {
+    /**
+     * Compat class for Symfony 6.0 and newer support.
+     *
+     * @internal
+     */
+    abstract class BaseAbstractFOSRestController extends Foo
+    {
+        /**
+         * {@inheritdoc}
+         */
+        public static function getSubscribedServices(): array
+        {
+            return []
+        }
+    }
+} else {
+    /**
+     * Compat class for Symfony 5.4 and older support.
+     *
+     * @internal
+     */
+    abstract class BaseAbstractFOSRestController extends Foo
+    {
+        /**
+         * @return array
+         */
+        public static function getSubscribedServices()
+        {
+            return [];
+        }
+    }
+}
+
+/**
+ * Controllers using the View functionality of FOSRestBundle.
+ */
+abstract class AbstractFOSRestController extends BaseAbstractFOSRestController
+{
+    // use ControllerTrait;
+
+    protected function getViewHandler(): void
+    {
+    }
+}
+