I think I was mistaken. They are just showing setting languages by using the speech recognizer intent methods.
I guess I am just confused as to why mandarin is not appearing in the drop down when it should be supported on my device. There are some really obscure languages in that long list. So my original google searches were for getting it to appear in that drop down. And that led me to the intent methods.
Perhaps I can just set SetDetectionLanguage(“zh”) or similar?