private void DemoAdaptor()
        {
            IAdaptor adap   = new Adaptor1();
            string   newstr = adap.Request("anders");

            Console.WriteLine(newstr);

            IAdaptor adap2   = new Adaptor2();
            string   newstr2 = adap2.Request("anders");

            Console.WriteLine(newstr2);
        }
        private void DemoAdaptor()
        {
            IAdaptor adap = new Adaptor();

            string nystr = adap.Request("peter");

            Console.WriteLine(nystr);

            IAdaptor adap2  = new Adaptor2();
            string   nystr2 = adap2.Request("peter");

            Console.WriteLine(nystr2);
        }