docs: public AbucoinsPaymentMethod[] getPaymentMethods() throws IOException {
      AbucoinsPaymentMethods paymentMethods =
          abucoinsAuthenticated.getPaymentMethods(
              exchange.getExchangeSpecification().getApiKey(),
              signatureCreator,
              exchange.getExchangeSpecification().getPassword(),
              timestamp());
  
      if (paymentMethods.getPaymentMethods().length == 1
          && paymentMethods.getPaymentMethods()[0].getMessage() != null)
        throw new ExchangeException(paymentMethods.getPaymentMethods()[0].getMessage());
      return paymentMethods.getPaymentMethods();
    }