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

vendor/symfony/serializer/Encoder/DecoderInterface.php

@@ -0,0 +1,49 @@
+<?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\Encoder;
+
+use Symfony\Component\Serializer\Exception\UnexpectedValueException;
+
+/**
+ * Defines the interface of decoders.
+ *
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ */
+interface DecoderInterface
+{
+    /**
+     * Decodes a string into PHP data.
+     *
+     * @param string $data    Data to decode
+     * @param string $format  Format name
+     * @param array  $context options that decoders have access to.
+     *
+     * The format parameter specifies which format the data is in; valid values
+     * depend on the specific implementation. Authors implementing this interface
+     * are encouraged to document which formats they support in a non-inherited
+     * phpdoc comment.
+     *
+     * @return mixed
+     *
+     * @throws UnexpectedValueException
+     */
+    public function decode($data, $format, array $context = array());
+
+    /**
+     * Checks whether the deserializer can decode from given format.
+     *
+     * @param string $format format name
+     *
+     * @return bool
+     */
+    public function supportsDecoding($format);
+}