Instructs the target amqpsender object to close
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.
After the close() call returns, calling the isopen() method on the target object will return
false. However, any variable referencing the target object will not be
null until the object goes out of scope, or the variable is nulled manually. As such, isopen() remains the recommended means to determine the state of an amqpsender object.