How to use the azure-iot-hub.azure.iot.hub.protocol.iot_hub_gateway_service_ap_is20190630.IotHubGatewayServiceAPIs20190630Configuration function in azure-iot-hub

def __init__(self, credentials, base_url=None):

        if credentials is None:
            raise ValueError("Parameter 'credentials' must not be None.")
        if not base_url:
            base_url = "https://fully-qualified-iothubname.azure-devices.net"

        super(IotHubGatewayServiceAPIs20190630Configuration, self).__init__(base_url)

        self.add_user_agent("iothubgatewayserviceapis20190630/{}".format(VERSION))

        self.credentials = credentials

def __init__(self, credentials, base_url=None):

        self.config = IotHubGatewayServiceAPIs20190630Configuration(credentials, base_url)
        super(IotHubGatewayServiceAPIs20190630, self).__init__(self.config.credentials, self.config)

        client_models = {k: v for k, v in models.__dict__.items() if isinstance(v, type)}
        self.api_version = "2019-06-30"
        self._serialize = Serializer(client_models)
        self._deserialize = Deserializer(client_models)

        self.service = ServiceOperations(
            self._client, self.config, self._serialize, self._deserialize
        )