[NTG-context] get current fontstyle with lua

Hello list, I need the lua equivalent of \fontstyle, a function that returns a string like "rm", "ss", etc. A lua equivalent for \doifelse{\fontstyle}{ss}{...}{...} to write lua code like this: local fs = get_current_font_style() if fs == "ss" then ... else ... end Thanks, best greetings MF