def get_security_groups(self, instance=None):
        if instance is None:
            return self.convert_to_dict_sc_grs(
                self.nova_client.security_groups.list())
        return self.convert_to_dict_sc_grs(
            self.nova_client.security_groups.list(instance))
dataset/ETHPy150Open MirantisWorkloadMobility/CloudFerry/cloudferry/lib/os/network/nova_network.py/NovaNetwork.get_security_groups/original