def load(self):
        if os.path.exists(self.path):
            with open(self.path, 'r') as f:
                self.body_labels = collections.OrderedDict(json.load(f))
def export(self, request):
        serializer = ConditionExportSerializer(self.get_queryset(), many=True)
        xml = ConditionRenderer().render(serializer.data)
        return XMLResponse(xml, name='conditions')