static void Main(string[] args)
        {
            IMobilePhone nokia       = new Nokia();
            MobileClient nokiaClient = new MobileClient(nokia);

            Console.WriteLine("*****************NOKIA********************");
            Console.WriteLine(nokiaClient.GetNormalPhoneDetails());
            Console.WriteLine(nokiaClient.GetSmartPhoneDetails());
        }
        static void Main(string[] args)
        {
            IMobilePhone nokiaMobilePhone = new Nokia();
            MobileClient nokiaClient      = new MobileClient(nokiaMobilePhone);

            Console.WriteLine("********* NOKIA **********");
            Console.WriteLine(nokiaClient.GetSmartPhoneModelDetails());
            Console.WriteLine(nokiaClient.GetNormalPhoneModelDetails());

            IMobilePhone samsungMobilePhone = new Samsung();
            MobileClient samsungClient      = new MobileClient(samsungMobilePhone);

            Console.WriteLine("******* SAMSUNG **********");
            Console.WriteLine(samsungClient.GetSmartPhoneModelDetails());
            Console.WriteLine(samsungClient.GetNormalPhoneModelDetails());

            Console.ReadKey();
        }