{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"for"}]}
                for f in fields.into_iter().rev() {
                    quote!(span =>#krate::option::Option::Some(#krate::cmp::Ordering::Equal));
                    let t1 = tt::Ident::new(&format!("{}_self", f.sym), f.span);