{"ast_node_type":"variable","tokens":[{"end":87,"kind":"keyword","start":0,"text":"let"}]}
    let ExpandResult::Ready(ret) = get_single_expr_from_tts(cx, span, tts, name) else {
) -> ExpandResult<Result<(Symbol, Span), ErrorGuaranteed>, ()> {
        return ExpandResult::Retry(());