{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"if"}]}
                    if type_matches_path(elem, &["rustc_span", "Span"]) {
                for (idx, elem) in tup.elems.iter().enumerate() {
                        span_idx.set_once(syn::Index::from(idx), elem.span().unwrap());