Unfortunately not. It is all proprietary. However the key idea is simple enough: specify your domain model using JSON or your own parsed language (what I do). Read the specification and generate C++/C#/Java/Typescript/… code. That’s it.

There are many examples out there you can look at. Google buffers for example. The generator I implemented at work started out doing something like Google buffers 5 years before Google buffers became a thing. But it has then been expanded massively by colleagues to do so much more. It has saved man years of programming work and has removed a lot of the boring repetitive work. I think that is why it was become so popular among colleagues. It is the first thing they install when starting a new project.