That's interesting, I hadn't come across that. Is it documented anywhere? It's unfortunate that it doesn't handle errors; in my case I definitely needed clean handling, so couldn't have used it, but it could be handy for future needs.
Its not documented, I just REd how SSVC notifications worked.
If you need clean handling, then it actually works fine. Instead of returning the error item the error is written into the conversion task, its state set to Failed/Discarded and 'this' returned. This means that diligent error checking is necessary so the method doesnt throw (isError, isCollection, no throw, is not null etc.)
