static void Main(string[] args)
        {
            //create a developer
            Developer developer = new Developer();
            developer.Name = "John";

            //create a TeamLead
            TeamLead teamLead = new TeamLead();
            teamLead.Name = "Jack";

            //This is Resposiable Chain
            developer.Boss = teamLead;

            //create a problem that can be handled by developer.
            Problem Problemfirst = new Problem();
            Problemfirst.Description = "Here must be problem  that  can solve a developer";
            Problemfirst.Level = ResponsiableLevel.Low;
            Console.WriteLine("Problem Info: " + Problemfirst.Description);
            Console.WriteLine();
            //send problem
            developer.ProcessProblem(Problemfirst);
            Console.WriteLine();

            //create a problem that can be handled by TeamLead.
            Problem Problemsecond = new Problem();
            Problemsecond.Description = "Here must be problem  that  can solve a TeamLead";
            Problemsecond.Level = ResponsiableLevel.High;
            Console.WriteLine("Request Info: " + Problemsecond.Description);
            Console.WriteLine();
            //send problem
            developer.ProcessProblem(Problemsecond);
        }