<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def refund_reward(self, agreement_id, amount, account):
 """ Refund reaward condition. :param agreement_id: id of the agreement, hex str :param amount: Amount of tokens, int :param account: Account :return: """

        return self.release_reward(agreement_id, amount, account)