As far as I can tell:
Aren't documented anywhere. I'm lucky I stumbled into them before I independently made them :p
It seems like there's a chance they might end up doing a bit more than just translating attribute names too.
@bradleypriest that code doesn't do anything. Unsure why it's there.
Yeah, was just wondering if that's where you were thinking of putting embedded stuff eventually, it's where I was thinking of adding readOnly hooks.
@bradleypriest Yes, and yes.
@thomasboyt can you reopen this on emberjs/website?