{"ast_node_type":"variable","tokens":[{"end":42,"kind":"keyword","start":0,"text":"let"}]}
        let generic_def = match typeable {
    fn lower_path_inner(&mut self, typeable: TyDefId, infer_args: bool) -> Ty {
            TyDefId::BuiltinType(builtin) => return TyBuilder::builtin(builtin),