{"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"if"}]}
    if fmt_detail == FmtDebug::None {
    let fmt_detail = cx.sess.opts.unstable_opts.fmt_debug;
        return BlockOrExpr::new_expr(cx.expr_ok(span, cx.expr_tuple(span, ThinVec::new())));