I authenticated user as mentioned in the docs (explicit OAuth 2.0 flow) and I have received accessToken. But couldn't find a way to get user's ID (account ID?). Is there any way of programmatically getting it and not by asking user to provide it? Why is it built this way?

I need this question for Stackapps demo app.

Well, I' m just learning new libraries here public static void heh(){ System.out.println("lol"); }