Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/serializer/Tests/Fixtures/PropertySiblingHolder.php

@@ -0,0 +1,39 @@
+<?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\Serializer\Tests\Fixtures;
+
+/**
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class PropertySiblingHolder
+{
+    public $sibling0;
+    public $sibling1;
+    public $sibling2;
+
+    public function __construct()
+    {
+        $sibling = new PropertySibling();
+
+        $this->sibling0 = $sibling;
+        $this->sibling1 = $sibling;
+        $this->sibling2 = $sibling;
+    }
+}
+
+/**
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class PropertySibling
+{
+    public $coopTilleuls = 'Les-Tilleuls.coop';
+}