[Telepathy] tp-qt4 Observer, Approver, Handler high-level API proposal

[Andre Moreira Magalhaes]

Kenneth Rohde Christiansen wrote:
> What about
>
> operationFinished
> operationFailed ?
>
> If it failed it didn't really finish, did it?
>
>   
It means the operation has finished but with an error. I sent another 
sketch using PendingOperation, a class that we use all over tp-qt4.

BR
Andrunko