def has_key(self, key):
    return self.dictionary.has_key(key)
Tests that calling merge_to() when no merge is required acts as a move.
dataset/ETHPy150Open AppScale/appscale/InfrastructureManager/utils/persistent_dictionary.py/PersistentDictionary.has_key--crossover with--dataset/ETHPy150Open malcolmt/django-acacia/acacia/tests/test_models.py/TopicTest.test_merge_without_overlap