如何使用原生的Interactive Brokers Python API创建条件订单？

from ibapi.client import EClient
from ibapi.wrapper import EWrapper
from ibapi.contract import Contract
from ibapi.order import Order

class IBClient(EWrapper, EClient):
    def __init__(self):
        EClient.__init__(self, self)
    
    def nextValidId(self, orderId: int):
        # 获取下一个有效的订单ID
        self.nextOrderId = orderId

def create_condition_order():
    # 创建交易合约
    contract = Contract()
    contract.symbol = "AAPL"
    contract.secType = "STK"
    contract.exchange = "SMART"
    contract.currency = "USD"

    # 创建条件订单
    order = Order()
    order.action = "BUY"
    order.orderType = "STP"
    order.totalQuantity = 100
    order.auxPrice = 130.0

    # 设置触发条件
    order.conditions.append(PriceCondition(PriceCondition.TriggerMethodEnum.Last,
                                           120.0, True, True))

    # 创建IB客户端并连接到服务器
    client = IBClient()
    client.connect("localhost", 7496, 0)

    # 等待连接成功
    while not client.isConnected():
        pass

    # 发送条件订单请求
    client.placeOrder(client.nextOrderId, contract, order)

    # 断开连接
    client.disconnect()

# 调用函数创建条件订单
create_condition_order()