API for docs works the same way as it worked for ifc2x3 and ifc4.
Besides changing `doc.py` and adding `.json` schemas added `ifc4x3dev_scrape_data_for_docs.py` (it's kind of hacky now and relies on `server.py` code from the further mentioned repo) that's used to parse some entities descriptions from https://github.com/buildingSMART/IFC4.3.x-development for later use in `doc.py`.
Andrej730