diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/Security/Acl/Model/SecurityIdentityInterface.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/Security/Acl/Model/SecurityIdentityInterface.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,31 @@
+<?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;
+
+/**
+ * This interface provides an additional level of indirection, so that
+ * we can work with abstracted versions of security objects and do
+ * not have to save the entire objects.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+interface SecurityIdentityInterface
+{
+    /**
+     * This method is used to compare two security identities in order to
+     * not rely on referential equality.
+     *
+     * @param SecurityIdentityInterface $identity
+     * @return void
+     */
+    function equals(SecurityIdentityInterface $identity);
+}