code: def repay_funding(self, amount, currency):
          
          params = {
              'amount': amount,
              'currency': currency  # example: USD
              }
          return self._send_message('post', '/funding/repay',
                                    data=json.dumps(params))
docs: Repay funding. Repays the older funding records first.
  
          Args:
              amount (int): Amount of currency to repay
              currency (str): The currency, example USD
  
          Returns:
              Not specified by cbpro.