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

vendor/symfony-cmf/routing/ContentRepositoryInterface.php

@@ -0,0 +1,46 @@
+<?php
+
+/*
+ * This file is part of the Symfony CMF package.
+ *
+ * (c) 2011-2014 Symfony CMF
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Cmf\Component\Routing;
+
+/**
+ * Interface used by the DynamicRouter to retrieve content by it's id when
+ * generating routes from content-id.
+ *
+ * This can be easily implemented using i.e. the Doctrine PHPCR-ODM
+ * DocumentManager.
+ *
+ * @author Uwe Jäger
+ */
+interface ContentRepositoryInterface
+{
+    /**
+     * Return a content object by it's id or null if there is none.
+     *
+     * If the returned content implements RouteReferrersReadInterface, it will
+     * be used to get the route from it to generate an URL.
+     *
+     * @param string $id id of the content object
+     *
+     * @return object A content that matches this id.
+     */
+    public function findById($id);
+
+    /**
+     * Return the content identifier for the provided content object for
+     * debugging purposes.
+     *
+     * @param object $content A content instance
+     *
+     * @return string|null $id id of the content object or null if unable to determine an id
+     */
+    public function getContentId($content);
+}