{"ast_node_type":"variable","tokens":[{"end":63,"kind":"keyword","start":0,"text":"let"}]}
        let ctor_sub_validity = self.validity.specialize(ctor);
        let ctor_sub_tys = cx.ctor_sub_tys(ctor, &self.ty);
        ctor_sub_tys.map(move |(ty, PrivateUninhabitedField(private_uninhabited))| PlaceInfo {