public void Execute()
        {
            var username = Input.ParseString(message: "What is the username: "******"What is the password: "******"Welcome!");
            }
            else
            {
                Console.WriteLine("That password is incorrect.");
            }
        }
            public void Invalid_Password_Attempt_With_Varying_Casing()
            {
                bool attemptedPassword = PasswordValidator.Validate("validUser", "PaSSword");

                Assert.That(attemptedPassword, Is.False);
            }
            public void Invalid_Username()
            {
                bool attemptedPassword = PasswordValidator.Validate("invalidUsername", "password1");

                Assert.That(attemptedPassword, Is.False);
            }
            public void Valid_Password_And_Username()
            {
                bool attemptedPassword = PasswordValidator.Validate("validUser", "password");

                Assert.That(attemptedPassword, Is.True);
            }