public Order GetMatchingOrder(UserHandler handler, TradeOffer trade)
{
Order buy = BuyOrders.FirstOrDefault((o) => o.TradeOfferMatches(handler, trade) == true);
if (buy != null)
{
return(buy);
}
return(SellOrders.FirstOrDefault((o) => o.TradeOfferMatches(handler, trade) == true));
}