public static Trade Price(this CommodityFuture trade, decimal?price)
 {
     trade.Price = price;
     return(trade);
 }
 public static Trade BasePrice(this CommodityFuture trade, decimal?basePrice)
 {
     trade.BasePrice = basePrice;
     return(trade);
 }
 public static Trade Spread(this CommodityFuture trade, decimal?spread)
 {
     trade.Spread = spread;
     return(trade);
 }
 public static Trade CurrencyAmount(this CommodityFuture trade, decimal?currencyAmount)
 {
     trade.CurrencyAmount = currencyAmount;
     return(trade);
 }