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libraries/vendor/joomla/authentication/src/AuthenticationStrategyInterface.php

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+<?php
+
+/**
+ * Part of the Joomla Framework Authentication Package
+ *
+ * @copyright  Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
+ * @license    GNU General Public License version 2 or later; see LICENSE
+ */
+
+namespace Joomla\Authentication;
+
+/**
+ * Joomla Framework AuthenticationStrategy Interface
+ *
+ * @since  1.0
+ */
+interface AuthenticationStrategyInterface
+{
+    /**
+     * Attempt authentication.
+     *
+     * @return  string|boolean  A string containing a username if authentication is successful, false otherwise.
+     *
+     * @since   1.0
+     */
+    public function authenticate();
+
+    /**
+     * Get last authentication result.
+     *
+     * @return  integer  An integer from Authentication class constants with the authentication result.
+     *
+     * @since   1.0
+     */
+    public function getResult();
+}