Edit File: UnsetKeyException.php
<?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\Config\Definition\Exception; /** * This exception is usually not encountered by the end-user, but only used * internally to signal the parent scope to unset a key. * * @author Johannes M. Schmitt <schmittjoh@gmail.com> */ class UnsetKeyException extends Exception { }