![Prompt](https://i.imgur.com/py6eogv.png)

I want to choose "Add".

I guess I can [enable "Keyboard access"](https://apple.stackexchange.com/a/169877) and use the tab key, but there must be a reason developers have it disabled by default. And that answer says there are dialog-specific shortcuts anyway, and I guess that's the "Mac" way to handle it. What are they in this case?

(Tried various combinations of `⌘`, `⌥`, `ctrl`, `⇧` and other keys. Only `↵` and `⌘`+`.` choose "Don't Add" and that's it.)