docs: @Override
    public String placeLimitOrder(LimitOrder placeOrder) {
      OrderType type = placeOrder.getType();
      Currency baseCurrency = placeOrder.getCurrencyPair().base;
      Currency counterCurrency = placeOrder.getCurrencyPair().counter;
      BigDecimal originalAmount = placeOrder.getOriginalAmount();
      BigDecimal limitPrice = placeOrder.getLimitPrice();
      OrderReq orderReq =
          createNormalizedLimitOrderReq(
              baseCurrency, counterCurrency, type, limitPrice, originalAmount, null, null, null);
      try {
  
        orderApi.order(orderReq).getOrderHash();
      } catch (Exception e) {
  
        e.printStackTrace();
      }
      return null;
    }