Offsetting, SimplifyPaths and PolyTree64

[frenoMax]

In the documentation it is recommeded to use SimplifyPaths on a Paths after offseting.
If the returned type from my offseting operation is PolyTree64 how can I apply the offsetting in a good way?

I know PolyTree is a read only data-structure, so should I use SimplifyPath when reading the Polygon from it. Or could there be a flag either to the ClipperOffset class or execute function which will applied SimplifyPath to them?