{"ast_node_type":"variable","tokens":[{"end":88,"kind":"keyword","start":0,"text":"let"}]}
                let loaded_macro = self.cstore().load_macro_untracked(def_id, self.tcx);
            None => *self.extern_macro_map.borrow_mut().entry(def_id).or_insert_with(|| {
                let macro_data = match loaded_macro {