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

vendor/symfony/serializer/Normalizer/DenormalizableInterface.php

@@ -0,0 +1,38 @@
+<?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\Serializer\Normalizer;
+
+/**
+ * Defines the most basic interface a class must implement to be denormalizable.
+ *
+ * If a denormalizer is registered for the class and it doesn't implement
+ * the Denormalizable interfaces, the normalizer will be used instead
+ *
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ */
+interface DenormalizableInterface
+{
+    /**
+     * Denormalizes the object back from an array of scalars|arrays.
+     *
+     * It is important to understand that the denormalize() call should denormalize
+     * recursively all child objects of the implementor.
+     *
+     * @param DenormalizerInterface $denormalizer The denormalizer is given so that you
+     *                                            can use it to denormalize objects contained within this object
+     * @param array|scalar          $data         The data from which to re-create the object.
+     * @param string|null           $format       The format is optionally given to be able to denormalize differently
+     *                                            based on different input formats
+     * @param array                 $context      options for denormalizing
+     */
+    public function denormalize(DenormalizerInterface $denormalizer, $data, $format = null, array $context = array());
+}