def first(self):
        pairs = self.resolve()
        try:
            return iter_first(pairs)
        except ValueError:
            raise NotFoundError(u"{0} not found".format(self.name))
Create a subscription resource tag.
dataset/ETHPy150Open beetbox/beets/beets/util/confit.py/ConfigView.first--crossover with--dataset/ETHPy150Open Azure/azure-sdk-for-python/azure-mgmt-resource/azure/mgmt/resource/resources/operations/tags_operations.py/TagsOperations.create_or_update