<?phpnamespace Bluesquare\ValidatorBundle;use Bluesquare\ValidatorBundle\DependencyInjection\ValidatorExtension;use Symfony\Component\DependencyInjection\ContainerBuilder;use Symfony\Component\HttpKernel\Bundle\Bundle;class ValidatorBundle extends Bundle{ public function build(ContainerBuilder $container) { parent::build($container); } public function getContainerExtension() { if (null === $this->extension) $this->extension = new ValidatorExtension(); return $this->extension; }}