class HealthController(Controller):
    path = "health"

    @get(path="", cache=False, tags=["health"])
    async def get_health_status(self, health_service: HealthService) -> Response[HealthStatusDto]:
        result = await health_service.get_health_status()
        return Response(result, status_code=HTTP_200_OK if result.all_ok else HTTP_400_BAD_REQUEST)

class HealthService:
    def __init__(self,
                 ldap_connection_pool: LdapConnectionPool
                 ):
        self._ldap_connection_pool: LdapConnectionPool = ldap_connection_pool

       # rest of class

class LdapConnectionPool:
    def __init__(self, config_service: ConfigService):
        self._config_service = config_service

       # rest of class

class ConfigService:

    def __init__(self, config: Config | None = None):
        if config:
            self._internal_config = config
        else:
            self._internal_config = None
            self.read_config()

       # rest of class

class Config(BaseModel):
    # Allow none for testing
    a_config: AConfig | None
    b_config: BConfig | None