{"ast_node_type":"variable","tokens":[{"end":91,"kind":"keyword","start":0,"text":"let"}]}
                        let res = Res::Def(DefKind::Macro(macro_kind), def_id.to_def_id());
                    Some((macro_kind, ident, span)) => {
                        let macro_data = MacroData::new(self.r.dummy_ext(macro_kind));