private static void Main(string[] args)
        {
            Console.Write("\n  Testing CsGraph class");
            Console.Write("\n =======================");

            var node1 = new CsNode <string, string>("node1");
            var node2 = new CsNode <string, string>("node2");
            var node3 = new CsNode <string, string>("node3");
            var node4 = new CsNode <string, string>("node4");
            var node5 = new CsNode <string, string>("node5");

            node1.addChild(node2, "edge12");
            node1.addChild(node3, "edge13");
            node2.addChild(node3, "edge23");
            node2.addChild(node4, "edge24");
            node3.addChild(node1, "edge31");
            node5.addChild(node1, "edge51");
            node5.addChild(node4, "edge54");

            var graph = new CsGraph <string, string>("Fred");

            graph.addNode(node1);
            graph.addNode(node2);
            graph.addNode(node3);
            graph.addNode(node4);
            graph.addNode(node5);

            graph.showDependencies();

            graph.startNode = node1;
            Console.Write("\n\n  starting walk at {0}", graph.startNode.name);
            Console.Write("\n  not showing backtracks");
            graph.walk();

            graph.startNode = node2;
            Console.Write("\n\n  starting walk at {0}", graph.startNode.name);
            graph.showBackTrack = true;
            Console.Write("\n  show backtracks");
            graph.setOperation(new demoOperation());
            graph.walk();

            Console.Write("\n\n  Strong Components:");
            graph.strongComponents();
            foreach (var item in graph.strongComp)
            {
                Console.Write("\n  component {0}", item.Key);
                Console.Write("\n    ");
                foreach (var elem in item.Value)
                {
                    Console.Write("{0} ", elem.name);
                }
            }

            Console.Write("\n\n");
        }
        static void Main(string[] args)
        {
            Console.Write("\n  Testing CsGraph class");
            Console.Write("\n =======================");

            CsNode <string, string> node1 = new CsNode <string, string>("node1");
            CsNode <string, string> node2 = new CsNode <string, string>("node2");
            CsNode <string, string> node3 = new CsNode <string, string>("node3");
            CsNode <string, string> node4 = new CsNode <string, string>("node4");
            CsNode <string, string> node5 = new CsNode <string, string>("node5");

            node1.addChild(node2, "edge12");
            node1.addChild(node3, "edge13");
            node2.addChild(node3, "edge23");
            node2.addChild(node4, "edge24");
            node3.addChild(node1, "edge31");
            node5.addChild(node1, "edge51");
            node5.addChild(node4, "edge54");

            CsGraph <string, string> graph = new CsGraph <string, string>("Fred");

            graph.addNode(node1);
            graph.addNode(node2);
            graph.addNode(node3);
            graph.addNode(node4);
            graph.addNode(node5);

            graph.showDependencies();

            graph.startNode = node1;
            Console.Write("\n\n  starting walk at {0}", graph.startNode.name);
            Console.Write("\n  not showing backtracks");
            graph.walk();

            graph.startNode = node2;
            Console.Write("\n\n  starting walk at {0}", graph.startNode.name);
            graph.showBackTrack = true;
            Console.Write("\n  show backtracks");
            graph.setOperation(new demoOperation());
            graph.walk();

            Console.Write("\n\n");
        }