public bool CanAddAsDemand(IDiplomaticExchange exchange) { if (exchange == null) { throw new ArgumentNullException("request"); } return(!HasOverlap(exchange) && exchange.CanExecuteBetweenCivs(Receiver, Sender)); }
public bool CanAddAsBilateralExchange(IDiplomaticExchange exchange) { if (exchange == null) { throw new ArgumentNullException("exchange"); } return(!HasOverlap(exchange) && exchange.CanExecuteBetweenCivs(Sender, Receiver)); }