Using ofNode to build an L-System

I think that with ofNode it should be possible to do inside a loop what is done in the snippet posted here https://forum.openframeworks.cc/t/using-ofnode-to-build-an-l-system/22098/2?u=edapx
If it is not, it should be documented somewhere how to copy a ofNode.
I will experiment a bit again, and if it does not work I will simply use Vectors