Swift import of a ObjC typedef to a typealias?

I am attempting to import the following ObjC code:

@protocol Bar
@end

@interface Foo : NSObject
@end

typedef Foo<Bar> FooBar;

and what I would like is to have typedef Foo<Bar> FooBar map to something like typealias FooBar = Foo & Bar. I cannot seem to convince the importer to do this. Is there some magic I am missing?