Issue: Should Operations permit alternate and multiple responses

We discussed this briefly at the F2F (perhaps) but, I think it would be
extremely helpful to permit  alternate and multiple responses to a
request. That is permit multiple output messages in an operation like we
have multiple faults in an operation. It would then be helpful to make
them alternate or sequence. That is, do all of them come back or just
one of them..

This is perhaps a  suggestion for new functionality..

Thanks, Prasad