How to use Vosk Punctuation Model in C#

I've been googling and browsing all day long but cannot find how to use Vosk Punctuation models, especially in C#.
Is it supported at all? If yes, any example?

I am also looking for an answer to the following question:
Using Speaker Models - is it possible without training, that is, based on differences in voice pitch, and some other audio characteristics, etc.