{"ast_node_type":"other","tokens":[{"end":6,"kind":"keyword","start":0,"text":"};"}]}
    };
        ConcatBytesInvalid, ConcatBytesInvalidSuggestion, ConcatBytesNonU8, ConcatBytesOob,
    let snippet = cx.sess.source_map().span_to_snippet(span).ok();