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

vendor/symfony/http-kernel/Fragment/FragmentRendererInterface.php

@@ -0,0 +1,42 @@
+<?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\Fragment;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Controller\ControllerReference;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * Interface implemented by all rendering strategies.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface FragmentRendererInterface
+{
+    /**
+     * Renders a URI and returns the Response content.
+     *
+     * @param string|ControllerReference $uri     A URI as a string or a ControllerReference instance
+     * @param Request                    $request A Request instance
+     * @param array                      $options An array of options
+     *
+     * @return Response A Response instance
+     */
+    public function render($uri, Request $request, array $options = array());
+
+    /**
+     * Gets the name of the strategy.
+     *
+     * @return string The strategy name
+     */
+    public function getName();
+}