swift234

Metatypes of (metatypes of)* class types have a
non-trivial representation.

This is because subtyping extends infinitely meta-wards
in the metatype hierarchy:  the one thing you can do
with a metatype of a metatype is pull the instance
metatype out, but that instance type is still a subtype
of the instance type of the metatype of the base metatype,
so... just trust me on this.

Swift SVN r3178