def __iter__(self):
    raise NotImplementedError()
Modify original to modified, and check that pep8radius turns this
dataset/ETHPy150Open GoogleCloudPlatform/appengine-mapreduce/python/src/mapreduce/datastore_range_iterators.py/RangeIterator.__iter__--crossover with--dataset/ETHPy150Open hayd/pep8radius/tests/test_radius.py/TestRadius.check