Specifies what goods and how many a market or harbor shall transport. Use to establish the destination building for the trade.
b1 = Buildings.GetFirstBuilding(1, Buildings.MARKETPLACE)
b2 = Buildings.GetFirstBuilding(3, Buildings.MARKETPLACE)
WarriorsLib.SetTradingRoute(b2, b1, 3)
WarriorsLib.TradeGood(b2, Goods.GOLDBAR, 100, 3)