1:8-32 TModule "TInstanceClassMethodBind"
4:6-9 TTypeConstructor "Foo"
4:12-15 TDataConstructor "Foo"
4:16-19 TTypeConstructor "Int"
5:10-14 TClass "Show"
5:15-18 TTypeConstructor "Foo"
6:5-9 TClassMethod "show"
6:12-21 TVariable "undefined"