Chain_of_Responsibility.ConcreteHandler3.HandleRequest C# (CSharp) Method

        public override void HandleRequest(int request)
        {
            if (request >= 20 && request < 30) {
                Console.WriteLine("{0} handled request {1}",
                  this.GetType().Name, request);
            }
            else if (successor != null) {
                successor.HandleRequest(request);
            }
        }