def test_type(self):
        rset = event.ResultSet()
        with pytest.raises(NotImplementedError):
            rset.extend([])
        with pytest.raises(NotImplementedError):
            rset.extend(False)
def export(self, request):
        serializer = ConditionExportSerializer(self.get_queryset(), many=True)
        xml = ConditionRenderer().render(serializer.data)
        return XMLResponse(xml, name='conditions')