static void Main(string[] args)
        {
            var username = Credential.GetYourUsername();
            var password = Credential.GetYourPassword();

            var user        = new InstagramClient(username, password);
            var loginResult = user.LogIn();

            if (loginResult.authenticated)
            {
                // tested on December 11 2018
                var theRockpublicInfo = user.GetPublicInfo("therock");
            }
            Console.ReadLine();
        }