…ice (StevenRenaux)

This PR was merged into the 6.4 branch.

Discussion
----------

[Contracts] Fix `ServiceSubscriberTrait` for nullable service

| Q             | A
| ------------- | ---
| Branch?       | 6.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| License       | MIT

Used in a bundle context.

If you use the following example, you will get an exception:
 `ServiceNotFoundException: The service "twig" in the container provided to "App\Service\Dependency" has a dependency on a non-existent service "Twig\Environment".`

The `nullable` argument of the `SubscribedService` attribute is ignored.

```php
// src/Service/TwigAware.php
namespace App\Service;

use Twig\Environment;
use Symfony\Contracts\Service\Attribute\SubscribedService;

trait TwigAware
{
   #[SubscribedService('twig', nullable: true)]
    private function twig(): Environment
    {
         if (!$this->container->has('twig') ) {
            throw new \LogicException(\sprintf('Twig is required to use "%s" method. Try to run "composer require symfony/twig-bundle".', __METHOD__));
        }

        return $environment;
    }
}

// src/Service/MyService.php
namespace App\Service;

use Symfony\Contracts\Service\ServiceSubscriberInterface;
use Symfony\Contracts\Service\ServiceSubscriberTrait;

class MyService implements ServiceSubscriberInterface
{
    use ServiceSubscriberTrait, TwigAware;

    public function doWithTwig(): void
    {
        // $this->twig() ...
    }
}
```

Related to #60265

Commits
-------

95b0f9b Fix ServiceMethodsSubscriberTrait for nullable service

…le service (StevenRenaux)

This PR was merged into the 7.2 branch.

Discussion
----------

[Contracts] Fix `ServiceMethodsSubscriberTrait` for nullable service

| Q             | A
| ------------- | ---
| Branch?       | 7.2
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| License       | MIT

Used in a bundle context.

If you use the following example, you will get an exception:
 `ServiceNotFoundException: The service "twig" in the container provided to "App\Service\Dependency" has a dependency on a non-existent service "Twig\Environment".`

The `nullable` argument of the `SubscribedService` attribute is ignored.

```php
// src/Service/TwigAware.php
namespace App\Service;

use Twig\Environment;
use Symfony\Contracts\Service\Attribute\SubscribedService;

trait TwigAware
{
   #[SubscribedService('twig', nullable: true)]
    private function twig(): Environment
    {
         if (!$this->container->has('twig') ) {
            throw new \LogicException(\sprintf('Twig is required to use "%s" method. Try to run "composer require symfony/twig-bundle".', __METHOD__));
        }

        return $environment;
    }
}

// src/Service/MyService.php
namespace App\Service;

use Symfony\Contracts\Service\ServiceSubscriberInterface;
use Symfony\Contracts\Service\ServiceSubscriberTrait;

class MyService implements ServiceSubscriberInterface
{
    use ServiceSubscriberTrait, TwigAware;

    public function doWithTwig(): void
    {
        // $this->twig() ...
    }
}
```

Related to #60265

Commits
-------

e67db9a Fix ServiceMethodsSubscriberTrait for nullable service