Edit File: PrependExtensionInterface.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\DependencyInjection\Extension; use Symfony\Component\DependencyInjection\ContainerBuilder; interface PrependExtensionInterface { /** * Allow an extension to prepend the extension configurations. */ public function prepend(ContainerBuilder $container); }