{"ast_node_type":"variable","tokens":[{"end":68,"kind":"keyword","start":0,"text":"let"}]}
        let for_variant = |name: String, v: &VariantShape| match v {
    expand_simple_derive(db, span, tt, quote! {span => #krate::fmt::Debug }, |adt| {
            VariantShape::Struct(fields) => {