<?phpnamespace Parallalax\SynchroBundle;use Parallalax\SynchroBundle\DependencyInjection\ParallalaxSynchroExtension;use Symfony\Component\HttpKernel\Bundle\Bundle;class ParallalaxSynchroBundle extends Bundle { public function getContainerExtension(): ?\Symfony\Component\DependencyInjection\Extension\ExtensionInterface { if (null === $this->extension) { $this->extension = new ParallalaxSynchroExtension(); } return $this->extension; }}