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

vendor/symfony/dependency-injection/LazyProxy/Instantiator/InstantiatorInterface.php

@@ -0,0 +1,37 @@
+<?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\DependencyInjection\LazyProxy\Instantiator;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Definition;
+
+/**
+ * Lazy proxy instantiator, capable of instantiating a proxy given a container, the
+ * service definitions and a callback that produces the real service instance.
+ *
+ * @author Marco Pivetta <ocramius@gmail.com>
+ */
+interface InstantiatorInterface
+{
+    /**
+     * Instantiates a proxy object.
+     *
+     * @param ContainerInterface $container        the container from which the service is being requested
+     * @param Definition         $definition       the definition of the requested service
+     * @param string             $id               identifier of the requested service
+     * @param callable           $realInstantiator zero-argument callback that is capable of producing the real
+     *                                             service instance
+     *
+     * @return object
+     */
+    public function instantiateProxy(ContainerInterface $container, Definition $definition, $id, $realInstantiator);
+}