{"ast_node_type":"variable","tokens":[{"end":46,"kind":"keyword","start":0,"text":"let"}]}
        let fields = match def_id.as_local() {
    fn has_private_fields(&self, def_id: DefId) -> bool {
            Some(def_id) => self.r.struct_constructors.get(&def_id).cloned().map(|(_, _, f)| f),