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vendor/symfony/security-acl/Model/SecurityIdentityInterface.php

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+<?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
+     */
+    public function equals(SecurityIdentityInterface $identity);
+}