using System;

public class Program

{

    public static void Main()

    {

        ITest test = new Test();

        if(test is ITest castedTest)

        {

            Console.WriteLine(castedTest.GetCode().Id);

            Console.WriteLine(castedTest.Code.Name);            

        }   

        Console.WriteLine("Hello World");

    }

    public class Test : IItest

    {

        public CodeType Code => CodeType.CodeType2;

    }

    public interface ITest

    {

        CodeType Code {get;}

        public CodeType GetCode(){ return CodeType.CodeType2;}

    }

    public interface IItest : ITest

    {

        public new CodeType GetCode()

        {

            return CodeType.CodeType1;

        }

    }

    public class CodeType

    {

        public static CodeType CodeType1 => new CodeType(1, "first");

        public static CodeType CodeType2 => new CodeType(2, "second");

        public int Id {get; set;}

        public string Name {get; set;}

        public CodeType(int id, string name)

        {

            Id = id;

            Name = name;

        }

    }

}