UML representation of pyqtSignal transactions

I want to architect and document a large amount of python code using PyQt5/6 with significant use of pyqtSignal the intention being to use UML.

The closest I think of would be a sequence diagram, essentially objects communicating, however it’s not an exact fit so I wondered if anyone out there had captured/rendered pyqtSignals using UML? and if so what recommendations there might be.