{"ast_node_type":"variable","tokens":[{"end":70,"kind":"keyword","start":0,"text":"let"}]}
    let cache = if let Some((args, expr)) = modifiers.cache.as_ref() {
    // Find out if we should cache the query on disk
        let tcx = args.as_ref().map(|t| quote! { #t }).unwrap_or_else(|| quote! { _ });