{"ast_node_type":"variable","tokens":[{"end":48,"kind":"keyword","start":0,"text":"let"}]}
        let tys: SmallVec<[_; 2]> = match ctor {
        let single = |ty| smallvec![(ty, PrivateUninhabitedField(false))];
            Struct | Variant(_) | UnionField => match ty.kind(Interner) {