This is functionality only on the development branch (not currently in any build). It is still in progress. Thanks for your feedback, I'll make sure we put in getter checks as well.
Sure - just thought I'd drop my 5 cents.
Are there any plans to support mapping of child nodes as well?
Getter checks should be in the current snapshots now. Code is frozen for Beta1 except for bugs/quirks. Perhaps Beta2 we can put child nodes.