// src/Service/TwigAware.phpnamespaceApp\Service;useTwig\Environment;useSymfony\Contracts\Service\Attribute\SubscribedService;trait TwigAware{   #[SubscribedService('twig', nullable:true)]privatefunctiontwig():Environment    {if (!$this->container->has('twig') ) {thrownew \LogicException(\sprintf('Twig is required to use "%s" method. Try to run "composer require symfony/twig-bundle".',__METHOD__));        }return$environment;    }}// src/Service/MyService.phpnamespaceApp\Service;useSymfony\Contracts\Service\ServiceSubscriberInterface;useSymfony\Contracts\Service\ServiceSubscriberTrait;class MyServiceimplements ServiceSubscriberInterface{use ServiceSubscriberTrait, TwigAware;publicfunctiondoWithTwig():void    {// $this->twig() ...    }}