View file vendor/swiftmailer/swiftmailer/lib/classes/Swift/IdGenerator.php
<?php /* * This file is part of SwiftMailer. * (c) 2004-2009 Chris Corbyn * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ /** * Message ID generator. */ interface Swift_IdGenerator { /** * Returns a globally unique string to use for Message-ID or Content-ID. * * @return string */ public function generateId(); }