diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/HttpKernel/HttpCache/EsiResponseCacheStrategyInterface.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/HttpKernel/HttpCache/EsiResponseCacheStrategyInterface.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * This code is partially based on the Rack-Cache library by Ryan Tomayko,
+ * which is released under the MIT license.
+ * (based on commit 02d2b48d75bcb63cf1c0c7149c077ad256542801)
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\HttpCache;
+
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * EsiResponseCacheStrategyInterface implementations know how to compute the
+ * Response cache HTTP header based on the different ESI response cache headers.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface EsiResponseCacheStrategyInterface
+{
+    /**
+     * Adds a Response.
+     *
+     * @param Response $response
+     */
+    function add(Response $response);
+
+    /**
+     * Updates the Response HTTP headers based on the embedded Responses.
+     *
+     * @param Response $response
+     */
+    function update(Response $response);
+}