def get_balance_multi(self, crypto, addresses, confirmations=1):
        raise NotImplementedError(
            "This service does not support getting multiple address balances. "
            "Or rather it has no defined 'get_balance_multi' method."
        )
Same as above, except addresses are passed in as a list instead of
dataset/ETHPy150Open priestc/moneywagon/moneywagon/core.py/Service.get_balance_multi