questions re the ChainingMetadataProvider type

[Cantor, Scott]

> If that's true, then you may as well deprecate ChainingMetadataProvider.

I thought we did, on the pages at least, but I think I'm mis-remembering because of how the metadata providers file works, it sort of has to explicitly be a Chaining provider at the top level I guess just because of the schema. We probably could do something about that if we wanted, but it's probably not worth it, we just pre-bake that in as a default. I'm just saying nobody's likely to configure one deliberately.

-- Scott