Cancel the AMQP transfer
Important Note Agent AMQP functionality is now deprecated and will shortly become unsupported. Any attempt to interact with imp API amqp objects and methods on unregistered development devices or on production devices will generate a runtime error.
If you are using or intend to use Azure IoTHub, we recommend you make use of MQTT instead of AMQP. Please see our Azure IoT Hub integration for more information.
This method cancels an existing transfer. Once cancelled, it cannot be re-used, so create a new transfer to re-send the message.