def _get_cursor(self):
    raise NotImplementedError()
this test is an xfail
dataset/ETHPy150Open GoogleCloudPlatform/appengine-mapreduce/python/src/mapreduce/datastore_range_iterators.py/AbstractKeyRangeIterator._get_cursor--crossover with--dataset/ETHPy150Open allure-framework/allure-python/demo/test_basic_examples.py/test_xfail