Как обратиться к бд из статического класса в symfony?

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use DoctrineORMEntityManagerInterface;

class SomeClass
{
    private static $entityManager;

    public static function setEntityManager(EntityManagerInterface $entityManager)
    {
        self::$entityManager = $entityManager;
    }

    public static function doSomething()
    {
        $repository = self::$entityManager->getRepository(Entity::class);
        // ...
    }
}

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use DoctrineBundleDoctrineBundleRegistry;

class SomeClass
{
    private static $doctrine;

    public static function setDoctrine(Registry $doctrine)
    {
        self::$doctrine = $doctrine;
    }

    public static function doSomething()
    {
        $entityManager = self::$doctrine->getManager();
        $repository = $entityManager->getRepository(Entity::class);
        // ...
    }
}

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use DoctrineORMEntityManagerInterface;

class YourService
{
    private static $entityManager;

    public function __construct(EntityManagerInterface $entityManager)
    {
        self::$entityManager = $entityManager;
    }

    public static function doSomething()
    {
        $repository = self::$entityManager->getRepository(YourEntity::class);
        // ...
    }
}

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services:
    AppServiceYourService:
        arguments:
            $entityManager: '@doctrine.orm.entity_manager'