def has_prev_data(self):
        return self._meta.has_prev_data
testing if the default value will be used when the timebase argument
dataset/ETHPy150Open CiscoSystems/avos/horizon/tables/base.py/DataTable.has_prev_data--crossover with--dataset/ETHPy150Open eoyilmaz/anima/tests/previs/test_rate.py/RateTestCase.test_timebase_argument_skipped