Nice work, thanks!
It is unfortunate that we can't we import the Type ptr directly and we must create a qualified type with meaningless qualifiers. However, we use the very same methods for VisitSubstTemplateTypeParmType so, this is okay for now. Perhaps, in a later patch it would make sense to create an import overload that returns and Exptected<Type*> and takes Type* as a param. That could simplify this line and the cast below.