using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}

​

public class ConsentVersionTransformer

{

    public static string ConvertToFullMajorVersion(string inputVersion)

    {

        if (Version.TryParse(inputVersion, out var parsedVersion))

        {

            parsedVersion = new Version(parsedVersion.Major, 0);

        }

        else

        {

            throw new ArgumentException($"The supplied input '{inputVersion}' is not a valid version. Make sure that the version provided has the format 'X.X'.");

        }

​

        return parsedVersion.ToString();

    }

}