public void TestCase1()
        {
            var mediator = new ConcreteMediator();

            var colleague1 = new ConcreteColleague1(mediator);
            var colleague2 = new ConcreteColleague2(mediator);

            mediator.Colleague1 = colleague1;
            mediator.Colleague2 = colleague2;

            colleague1.Send("How are you?");
            colleague2.Send("Fine, Thank you!");
        }
        public void TestCase1()
        {
            var mediator = new ConcreteMediator();

              var colleague1 = new ConcreteColleague1(mediator);
              var colleague2 = new ConcreteColleague2(mediator);

              mediator.Colleague1 = colleague1;
              mediator.Colleague2 = colleague2;

              colleague1.Send("How are you?");
              colleague2.Send("Fine, Thank you!");
        }