{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"GenericArg::Lifetime(lt)"}]}
                        GenericArg::Lifetime(lt) => rbv.defs.get(&lt.hir_id.local_id).copied(),
                    generic_args.args.get(index).and_then(|arg| match arg {
                        _ => None,