def __iter__(self):
    return self
Optimize certain stacked wildcard patterns.
dataset/ETHPy150Open GoogleCloudPlatform/billing-export-python/cloudstorage/storage_api.py/ReadBuffer.__iter__--crossover with--dataset/ETHPy150Open ctxis/canape/CANAPE.Scripting/Lib/lib2to3/pytree.py/WildcardPattern.optimize