{"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"Ty::Enum(tys)"}]}
            Ty::Enum(tys) => tys.iter().all(|ty| ty.is_empty()),
            Ty::Tuple(tys) => tys.iter().any(|ty| ty.is_empty()),
            Ty::BigStruct { arity, ty } => arity != 0 && ty.is_empty(),