A Responder is simple class encapsulating the handling of a Remote (asynchronous) call and its result and/or fault. A Responder class implements the IResponder interface in the mx.rpc package.
A Responder object has two key methods:
- result() - function receives a ResultEvent
- fault() - function receives a FaultEvent
Read more about asynchronous Responders in Flex at Flex After Dark...