{"ast_node_type":"variable","tokens":[{"end":61,"kind":"keyword","start":0,"text":"let"}]}
        let span_map = ctx.db.expansion_span_map(macro_file);
    let node = if let Some(macro_file) = macro_file {
        prettify_macro_expansion(ctx.db, node.syntax().clone(), &span_map, ctx.krate.into())