{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"first.add_one_maybe(TtHandle::from_token(*sep));"}]}
                            first.add_one_maybe(TtHandle::from_token(*sep));
                        if let (Some(sep), true) = (&seq_rep.separator, subfirst.maybe_empty) {
                        }