public void nextState(pkge pkge) { pkge.status = new SCompleated(); }
public void prevState(pkge pkge) { pkge.status = new SOnTheWay(); }
public void nextState(pkge pkge) { pkge.status = new SSortingCenter(); }
public void prevState(pkge pkge) { Console.WriteLine("this is the first state!"); }
public void nextState(pkge pkge) { Console.WriteLine("this is the final state!"); }
void IRepository <pkge> .Update(pkge item) { throw new NotImplementedException(); }