def GetEncoding(self):
    if self._plist_xml_encoding:
      return self._plist_xml_encoding.lower()
    return None
Tests ``R._build_keys``. with a *weekly* granularity.
dataset/ETHPy150Open google/simian/src/simian/mac/munki/plist.py/ApplePlist.GetEncoding--crossover with--dataset/ETHPy150Open bradmontgomery/django-redis-metrics/redis_metrics/tests/test_models.py/TestR.test__build_keys_weekly