def get_email(self):
        raise NotImplementedError('Please implement this method')
helper function to emulate function total_seconds,
dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/sms/mixin.py/CommCareMobileContactMixin.get_email--crossover with--dataset/ETHPy150Open scikit-learn/scikit-learn/sklearn/utils/bench.py/total_seconds