setCustomConfig example

parent::build($container);

        /** @var $extension DependencyInjection\TestExtension */
        $extension = $container->getExtension('test');

        if (!$container->getParameterBag() instanceof FrozenParameterBag) {
            $container->setParameter('container.build_hash', 'test_bundle');
            $container->setParameter('container.build_time', time());
            $container->setParameter('container.build_id', 'test_bundle');
        }

        $extension->setCustomConfig(new CustomConfig());

        $container->addCompilerPass(new CheckTypeDeclarationsPass(true), PassConfig::TYPE_AFTER_REMOVING, -100);
    }
}