{"ast_node_type":"other","tokens":[{"end":6,"kind":"keyword","start":0,"text":"};"}]}
    };
        SyntaxExtension::new(sess, kind, span, Vec::new(), edition, ident.name, attrs, is_local)
    let dummy_syn_ext = |guar| (mk_syn_ext(Arc::new(DummyExpander(guar))), 0);