{"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"match"}]}
    match name_of_extern_decl(tcx, fi) {
fn get_relevant_span(tcx: TyCtxt<'_>, fi: hir::OwnerId) -> Span {
        SymbolName::Normal(_) => tcx.def_span(fi),