{"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"search_stack:"}]}
        search_stack: &mut Vec<(Ty<'tcx>, &'hir hir::Ty<'hir>)>,
        hir_args: &'hir hir::GenericArgs<'hir>,
    ) -> Option<&'hir hir::Lifetime> {