diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/Config/Resource/ResourceInterface.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/Config/Resource/ResourceInterface.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,43 @@
+<?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\Config\Resource;
+
+/**
+ * ResourceInterface is the interface that must be implemented by all Resource classes.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface ResourceInterface
+{
+    /**
+     * Returns a string representation of the Resource.
+     *
+     * @return string A string representation of the Resource
+     */
+    function __toString();
+
+    /**
+     * Returns true if the resource has not been updated since the given timestamp.
+     *
+     * @param integer $timestamp The last time the resource was loaded
+     *
+     * @return Boolean true if the resource has not been updated, false otherwise
+     */
+    function isFresh($timestamp);
+
+    /**
+     * Returns the resource tied to this Resource.
+     *
+     * @return mixed The resource
+     */
+    function getResource();
+}