diff -r 000000000000 -r 7f95f8617b0b vendor/assetic/src/Assetic/Factory/Resource/ResourceInterface.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/assetic/src/Assetic/Factory/Resource/ResourceInterface.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the Assetic package, an OpenSky project.
+ *
+ * (c) 2010-2011 OpenSky Project Inc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Assetic\Factory\Resource;
+
+/**
+ * A resource is something formulae can be loaded from.
+ *
+ * @author Kris Wallsmith <kris.wallsmith@gmail.com>
+ */
+interface ResourceInterface
+{
+    /**
+     * Checks if a timestamp represents the latest resource.
+     *
+     * @param integer $timestamp A UNIX timestamp
+     *
+     * @return Boolean True if the timestamp is up to date
+     */
+    function isFresh($timestamp);
+
+    /**
+     * Returns the content of the resource.
+     *
+     * @return string The content
+     */
+    function getContent();
+
+    /**
+     * Returns a unique string for the current resource.
+     *
+     * @return string A unique string to identity the current resource
+     */
+    function __toString();
+}