// the invariant is constrained by the signature -> polymorphic behaviour
// the if disappears!
public void Fly(IFlyable transport)
{
transport.Move();
System.Console.WriteLine("you are flying, bitch!");
}
// the invariant is constrained by the signature -> polymorphic behaviour
// the if disappears!
public void Fly(IFlyable transport)
{
transport.Move();
System.Console.WriteLine("you are flying, bitch!");
}