diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/Security/Acl/Model/ObjectIdentityRetrievalStrategyInterface.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/Security/Acl/Model/ObjectIdentityRetrievalStrategyInterface.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,28 @@
+<?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\Security\Acl\Model;
+
+/**
+ * Retrieves the object identity for a given domain object
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+interface ObjectIdentityRetrievalStrategyInterface
+{
+    /**
+     * Retrieves the object identity from a domain object
+     *
+     * @param object $domainObject
+     * @return ObjectIdentityInterface
+     */
+    function getObjectIdentity($domainObject);
+}