[PyGObject] Always visible and sticky columns in Gtk.TreeView

[<c buhtz posteo jp>]

I want to have one or more of the last/right columns in a Gtk.TreeView
always visible and sticky. I don't see how to do this.

Is there an inbuild way for this?
Or do I have to catch a resize event and handle that myself?

I opened a question on StackOverflow with screenshots and example code.
https://stackoverflow.com/q/55387959/4865723