On Tue, 17 Oct 2023 14:27:19 GMT, Andy Goryachev <angorya at openjdk.org> wrote: > it's a functional interface, so no gadgets at all. Both are functional interfaces. I think that `Subscription` can replace it, but isn't critical. ------------- PR Comment: https://git.openjdk.org/jfx/pull/1262#issuecomment-1768249992