def GetContents(self):
    if not hasattr(self, '_plist'):
      raise PlistNotParsedError
    return self._plist
original_failure() returns the underlying Failure of the Deferred
dataset/ETHPy150Open google/simian/src/simian/mac/munki/plist.py/ApplePlist.GetContents--crossover with--dataset/ETHPy150Open itamarst/crochet/crochet/tests/test_api.py/EventualResultTests.test_original_failure