@abc.abstractmethod
    def __len__(self):
        raise NotImplementedError
Same logic as upsert, but overwrites existing data with the payload
dataset/ETHPy150Open adewes/blitzdb/blitzdb/queryset.py/QuerySet.__len__--crossover with--dataset/ETHPy150Open xmunoz/sodapy/sodapy/__init__.py/Socrata.replace