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

vendor/symfony/validator/Mapping/Cache/CacheInterface.php

@@ -0,0 +1,45 @@
+<?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\Validator\Mapping\Cache;
+
+use Symfony\Component\Validator\Mapping\ClassMetadata;
+
+/**
+ * Persists ClassMetadata instances in a cache.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+interface CacheInterface
+{
+    /**
+     * Returns whether metadata for the given class exists in the cache.
+     *
+     * @param string $class
+     */
+    public function has($class);
+
+    /**
+     * Returns the metadata for the given class from the cache.
+     *
+     * @param string $class Class Name
+     *
+     * @return ClassMetadata|false A ClassMetadata instance or false on miss
+     */
+    public function read($class);
+
+    /**
+     * Stores a class metadata in the cache.
+     *
+     * @param ClassMetadata $metadata A Class Metadata
+     */
+    public function write(ClassMetadata $metadata);
+}