coffee.cs

var coffeeMachine = new CoffeeMachine();
var beans = new Beans();
var cup = new Cup();
var tap = new Tap();

if(cup.Empty()) {
  var ground = coffeeMachine.Grind(beans);
  if(!ground)
    throw new Exception("Grinding beans did not result in successful ground");
    
  coffeeMachine.AddCup(cup);
  coffeeMachine.AddToFilter(ground);
  coffeeMachine.Connect(tap);
  tap.Open();
  WaitUntil(coffeeMachine.IsReservoirFull);
  tap.Close();
  coffeeMachine.RunWaterThroughFilter();
  WaitUntil(cup.Full());
  coffeeMachine.Off();
  coffeeMachine.RemoveCup(cup);
}