def get_data(self, *args, **kwargs):
        raise NotImplementedError
Sets a new instance for testing.
dataset/ETHPy150Open django-leonardo/django-leonardo/leonardo/module/web/widgets/mixins.py/ContentProxyWidgetMixin.get_data--crossover with--dataset/ETHPy150Open viewfinderco/viewfinder/backend/services/itunes_store.py/ITunesStoreClient.SetInstance