The README mentions:
All counted Sphinx, Doxygen and XMLRunner will be included. Other checker types are not supported by this feature.
I'm checking if I could extend this tool to display NUnit (would require extension) and Junit failures in Gitlab, but I'd need to know if there are any known limitations to export it to a Code Quality JSON file.
I had a quick look at the documentation for it and it seems pretty generic but I'd like to check with you to be certain.
Follow-up question would be if you are open for extensions such as NUnit xml input parsing (and potentially others)