{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":")"}]}
    ) -> Option<&'hir hir::Lifetime> {
        search_stack: &mut Vec<(Ty<'tcx>, &'hir hir::Ty<'hir>)>,
        for (arg, hir_arg) in iter::zip(args, hir_args.args) {