    def _list(self, domain=None):
        # pylint: disable=arguments-differ
        url = "{base}".format(
            base=self.local_base_url
        )
        param = {}
        if domain:
            param['domainUuid'] = domain
        encode = urllib.urlencode(param)
        if encode:
            url += "?"
            url += encode
        return self.core.list(url)