docs: public OkCoinTradeResult futuresCancelOrder(long orderId, String symbol, FuturesContract contract)
        throws IOException {
  
      OkCoinTradeResult tradeResult =
          okCoin.futuresCancelOrder(
              apikey, String.valueOf(orderId), symbol, contract.getName(), signatureCreator());
      return returnOrThrow(tradeResult);
    }