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

vendor/zendframework/zend-hydrator/src/Strategy/DefaultStrategy.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Hydrator\Strategy;
+
+class DefaultStrategy implements StrategyInterface
+{
+    /**
+     * Converts the given value so that it can be extracted by the hydrator.
+     *
+     * @param mixed $value The original value.
+     * @return mixed Returns the value that should be extracted.
+     */
+    public function extract($value)
+    {
+        return $value;
+    }
+
+    /**
+     * Converts the given value so that it can be hydrated by the hydrator.
+     *
+     * @param mixed $value The original value.
+     * @return mixed Returns the value that should be hydrated.
+     */
+    public function hydrate($value)
+    {
+        return $value;
+    }
+}