php-resque/lib/Resque/Job/DontCreate.php

<?php

/**
 * Exception to be thrown if while enqueuing a job it should not be created.
 *
 * @package        Resque/Job
 * @author        Chris Boulton <chris@bigcommerce.com>
 * @license        http://www.opensource.org/licenses/mit-license.php
 */
class Resque_Job_DontCreate extends Exception
{

}