requestID The ID of the web service request to which to listen for results.
listener The listener object that gets called when the result of the given web service request is available.
Sets a listener for the results of a given web service request.
Listeners are typically used to get results of the asyncXYZ methods of the service.
To remove a listener, call setListener with
null as the listener.
Note: This method replaces the listener set by any previous call to setListener.