@property
    def cost_item_name(self):
        raise NotImplementedError("you must implement cost_item_name")
Returns an L{SSHTransportAddress} corresponding to the this side of
dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/accounting/payment_handlers.py/BaseStripePaymentHandler.cost_item_name--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/conch/ssh/transport.py/SSHTransportBase.getHost