4 * This file is part of the Symfony package.
6 * (c) Fabien Potencier <fabien@symfony.com>
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
12 namespace Symfony\Component\DependencyInjection\Extension
;
14 use Symfony\Component\DependencyInjection\ContainerBuilder
;
15 use Symfony\Component\Config\Definition\ConfigurationInterface
;
18 * ConfigurationExtensionInterface is the interface implemented by container extension classes.
20 * @author Kevin Bond <kevinbond@gmail.com>
22 interface ConfigurationExtensionInterface
25 * Returns extension configuration.
27 * @return ConfigurationInterface|null The configuration or null
29 public function getConfiguration(array $config, ContainerBuilder
$container);