Fail.hx:7: characters 8-12 : error: Void should be haxe.NotVoid
Fail.hx:7: characters 8-12 : ... have: (...) -> Void
Fail.hx:7: characters 8-12 : ... want: (...) -> haxe.NotVoid
Fail.hx:7: characters 8-12 : ... For function argument 'f'
Fail.hx:8: characters 8-16 : error: FakeVoid should be haxe.NotVoid
Fail.hx:8: characters 8-16 : ... have: (...) -> FakeVoid
Fail.hx:8: characters 8-16 : ... want: (...) -> haxe.NotVoid
Fail.hx:8: characters 8-16 : ... For function argument 'f'