using System;

using System.Collections.Generic;

​

namespace InsuranceV1

{

    public class TaxInfo

    {

        public int TIN

        {

            get;

            set;

        }

    }

​

    public class Party

    {

        public TaxInfo TaxInfo

        {

            get;

            set;

        }

    }

​

    public class Contract

    {

        public IEnumerable<Party> Parties

        {

            get;

            set;

        }

    }

}

​

namespace InsuranceV2

{

    public class TaxInfo

    {

        public string TIN

        {

            get;

            set;

        }

    }

​

    public class Party

    {

        public TaxInfo TaxInfo

        {

            get;

            set;

        }

    }

​

    public class Contract

    {

        public IEnumerable<Party> Parties

        {

            get;

            set;

        }

    }

}

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

​

    static InsuranceV1.Contract SomeApiOperation()

    {

        return new InsuranceV1.Contract();

    }

​

    static InsuranceV2.Contract SomeApiOperationV2()

    {

        return new InsuranceV2.Contract();

    }

}