def __setitem__(self, key, message):
        raise NotImplementedError('Method must be implemented by subclass')
Note: This method is very specific to the data of this test and
dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/Mailbox.__setitem__--crossover with--dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/sms/tests/test_chat.py/ChatHistoryTestCase.sms_to_json