{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"self.r.unused_macros.insert(def_id,"}]}
            self.r.unused_macros.insert(def_id, (node_id, ident));
        if !ident.as_str().starts_with('_') {
            let nrules = self.r.local_macro_map[&def_id].nrules;