code: def batchcancel_orders(self, order_ids: list, _async=False):
          
          assert isinstance(order_ids, list)
          params = {'order-ids': order_ids}
          path = f'/v1/order/orders/batchcancel'
          return api_key_post(params, path, _async=_async)
docs: 批量撤销订单
          :param order_id:
          :return: