def METHOD_NAME(self, request_adu):
    """ Process request ADU and return response.
    :param request_adu: A bytearray containing the ADU request.
    :return: A bytearray containing the response of the ADU request.
    """
    meta_data = self.get_meta_data(request_adu)
    request_pdu = self.get_request_pdu(request_adu)
    response_pdu = self.execute_route(meta_data, request_pdu)
    response_adu = self.create_response_adu(meta_data, response_pdu)
    return response_adu