For the new std.variant

[Jesse Phillips]

I literally meant it is not supposed to exist. There was a suggestion to even axe it from 2.056 I believe.

A library solution is intended to be created which will allow for the type to act as either a parent or child to the type.

http://stackoverflow.com/questions/3576580/does-d-have-newtype/3577246#3577246

So I understand its usage, but you shouldn't use it because it won't be there.