server/lib/private/forbiddenexception.php

<?php
/**
 * Copyright (c) 2014 Vincent Petry <pvince81@owncloud.com>
 * This file is licensed under the Affero General Public License version 3 or
 * later.
 * See the COPYING-README file.
 */

namespace OC;

/**
 * Exception thrown whenever access to a resource has
 * been forbidden or whenever a user isn't authenticated.
 */
class ForbiddenException extends \Exception {
}