{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"Ty::BigStruct"}]}
            Ty::BigStruct { arity, ty } => arity != 0 && ty.is_empty(),
            Ty::Enum(tys) => tys.iter().all(|ty| ty.is_empty()),
            Ty::BigEnum { arity, ty } => arity == 0 || ty.is_empty(),