@abc.abstractmethod
    def getDateTimes(self):
        raise NotImplementedError()
Alias a Selectable if it has a group by clause
dataset/ETHPy150Open gbeced/pyalgotrade/pyalgotrade/dataseries/__init__.py/DataSeries.getDateTimes--crossover with--dataset/ETHPy150Open blaze/blaze/blaze/compute/sql.py/alias_it