I have strange documentation habits and sometimes when you document everything in code comments up front, Copilot does seem to synthesize from your documentation most of the "bones" that you need. It often needs a thorough code review, but it's not unlike sending a requirements document to a very Junior developer that sometimes surprises you and getting back something that almost works in a PR you need a fine tooth comb on. A few times I've "finished my PR review" with "Not bad, Junior, B+".

I know a lot of us generally don't write comments until "last" so will never see this side of Copilot, but it is interesting to try if you haven't.