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

vendor/zendframework/zend-feed/src/Reader/Feed/FeedInterface.php

@@ -0,0 +1,110 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Feed;
+
+use Countable;
+use Iterator;
+
+/**
+*/
+interface FeedInterface extends Iterator, Countable
+{
+    /**
+     * Get a single author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0);
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors();
+
+    /**
+     * Get the copyright entry
+     *
+     * @return string|null
+     */
+    public function getCopyright();
+
+    /**
+     * Get the feed creation date
+     *
+     * @return string|null
+     */
+    public function getDateCreated();
+
+    /**
+     * Get the feed modification date
+     *
+     * @return string|null
+     */
+    public function getDateModified();
+
+    /**
+     * Get the feed description
+     *
+     * @return string|null
+     */
+    public function getDescription();
+
+    /**
+     * Get the feed generator entry
+     *
+     * @return string|null
+     */
+    public function getGenerator();
+
+    /**
+     * Get the feed ID
+     *
+     * @return string|null
+     */
+    public function getId();
+
+    /**
+     * Get the feed language
+     *
+     * @return string|null
+     */
+    public function getLanguage();
+
+    /**
+     * Get a link to the HTML source
+     *
+     * @return string|null
+     */
+    public function getLink();
+
+    /**
+     * Get a link to the XML feed
+     *
+     * @return string|null
+     */
+    public function getFeedLink();
+
+    /**
+     * Get the feed title
+     *
+     * @return string|null
+     */
+    public function getTitle();
+
+    /**
+     * Get all categories
+     *
+     * @return \Zend\Feed\Reader\Collection\Category
+     */
+    public function getCategories();
+}