final class ProductSyncSubscriber implements EventSubscriberInterface
{
    public function __construct(private readonly Manager $manager) {}

    public static function getSubscribedEvents(): array
    {
        return [
            ProductUpdatedEvent::class => 'onProductUpdated',
        ];
    }

    public function onProductUpdated(ProductUpdatedEvent $productUpdatedEvent): void
    {
        $this->manager->sync($productUpdatedEvent->getProductId());
    }
}

final class ProductSyncSubscriber
{
    public function __construct(private readonly Manager $manager) {}
    
    #[AsEventSubscriber(event: ProductUpdatedEvent, priority: 11)]
    public function onProductUpdated(ProductUpdatedEvent $productUpdatedEvent): void
    {
        $this->manager->sync($productUpdatedEvent->getProductId());
    }
}