--- /dev/null
+<?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\Writer\Extension;
+
+use DOMDocument;
+use DOMElement;
+
+/**
+*/
+interface RendererInterface
+{
+ /**
+ * Set the data container
+ *
+ * @param mixed $container
+ * @return void
+ */
+ public function setDataContainer($container);
+
+ /**
+ * Retrieve container
+ *
+ * @return mixed
+ */
+ public function getDataContainer();
+
+ /**
+ * Set DOMDocument and DOMElement on which to operate
+ *
+ * @param DOMDocument $dom
+ * @param DOMElement $base
+ * @return void
+ */
+ public function setDomDocument(DOMDocument $dom, DOMElement $base);
+
+ /**
+ * Render
+ *
+ * @return void
+ */
+ public function render();
+}