static void Main(string[] args)
{
IMediator mediator = new Mediator();
Flight flight1 = new Flight(mediator);
Runway runway = new Runway(mediator);
mediator.RegisterFlight(flight1);
mediator.RegisterRunway(runway);
flight1.Land();
runway.Land();
flight1.Land();
Console.ReadLine();
}
public void RegisterRunway(Runway runway)
{
_runway = runway;
}