code: public ResponseWrapper unmarshal(String payload) throws ResponseParseException {
  
      Services xmlServices = parseResponsePayload(payload);
  
      ResponseWrapper response = constructResponseWrapperFromResponse(xmlServices);
  
      return response;
  
    }
docs: Translate the wireline string into an instance of a ResponseWrapper object.
  
  @param payload the wireline string
  @return a new instance of a {@link ResponseWrapper}.
  @throws ResponseParseException if some issues occurred parsing the response