| protected createContainerExtension ( ) : Symfony\Component\DependencyInjection\Extension\ExtensionInterface | null | ||
| return | Symfony\Component\DependencyInjection\Extension\ExtensionInterface | null | |
protected function createContainerExtension()
{
if (class_exists($class = $this->getContainerExtensionClass())) {
return new $class();
}
}