public static void SayHelloUser(string userName)
        {
            Console.WriteLine($"Hello, {userName}!");
            throw new NotImplementedException();
        }

        public static void PrintFace()
        {
            Console.WriteLine($" +\"\"\"\"\"+{Environment.NewLine}" +
                              $"(| o o |){Environment.NewLine}" +
                              $" |  ^  |{Environment.NewLine}" +
                              $" | '-' |{Environment.NewLine}" +
                              $" +-----+{Environment.NewLine}");
            throw new NotImplementedException();
        }