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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_sushy_system(self, system_id):
 """Get the sushy system for system_id :param system_id: The identity of the System resource :returns: the Sushy system instance :raises: IloError """

        system_url = parse.urljoin(self._sushy.get_system_collection_path(),
                                   system_id)
        try:
            return self._sushy.get_system(system_url)
        except sushy.exceptions.SushyError as e:
            msg = (self._('The Redfish System "%(system)s" was not found. '
                          'Error %(error)s') %
                   {'system': system_id, 'error': str(e)})
            LOG.debug(msg)
            raise exception.IloError(msg)