public function load(array $configs, ContainerBuilder $container)
{
$configuration = new Configuration();
$config = $this->processConfiguration($configuration, $configs);
$container->setParameter('sulu_preview.mode', $config['mode']);
$container->setParameter('sulu_preview.delay', $config['delay']);
$container->setParameter('sulu_preview.defaults.analytics_key', $config['defaults']['analytics_key']);
$loader = new XmlFileLoader($container, new FileLocator(__DIR__ . '/../Resources/config'));
$loader->load('services.xml');
}