<?phpnamespace Kira0269\LogViewerBundle;use Kira0269\LogViewerBundle\DependencyInjection\LogViewerExtension;use Symfony\Component\HttpKernel\Bundle\Bundle;class LogViewerBundle extends Bundle{ public function getContainerExtension() { if (null === $this->extension) { $this->extension = new LogViewerExtension(); } return $this->extension; }}