public void Dispense() { gumballMachine.ReleaseBall(); if (gumballMachine.GetCount() > 0) { gumballMachine.SetState(gumballMachine.GetNoQuarterState()); } else { Console.WriteLine("Oops, out of gumballs!"); gumballMachine.SetState(gumballMachine.GetSoldOutState()); } }