default Optional<String> decodeData(final String data) {
    return Optional.empty();
  }
Some errors have additional data associated with them, that is possible to decode to provide a
more detailed error response.

@param data the additional data to decode
@return an optional containing the decoded data if the error has it and the decoding is
    successful, otherwise empty.
plugin-api/src/main/java/org/hyperledger/besu/plugin/services/rpc/RpcMethodError.java