Actions should not be Identifiable ?

[Tom Zeller]

> But I think IDable and Initable are just separate ideas, personally, and
> shouldn't be linked.

Understood. But it seems to make sense for getId() to be
@NonnullAfterInit, which bundles IDable and Initable.

> I think
> if you need to default the ID, it's not something that should have one,
> personally.

I think I might be conflating ID and the log prefix.