using System;

using Newtonsoft.Json;

public class Program

{

    public interface ISteeringWheelIdentifier {}

    public interface ISteeringWheel 

    {

        ISteeringWheelIdentifier Identifier {get;}

    }

    public class ManufacturerIdentifier : ISteeringWheelIdentifier

    {

        public string ManufacturerEmail {get; set;}

    }

    public class PartNumberIdentifier : ISteeringWheelIdentifier

    {

        public string PartNumber {get; set;}

    }

    public class ClassicSteeringWheel : ISteeringWheel 

    {

        public ClassicSteeringWheel(ManufacturerIdentifier identifier)

        {

            Identifier = identifier;

        }

        public string HornButtonManufacturer {get; set;}

        public ISteeringWheelIdentifier Identifier {get;private set;}

    }

    public class ModernSteeringWheel : ISteeringWheel

    {

        public ModernSteeringWheel(PartNumberIdentifier identifier)

        {

            Identifier = identifier;

        }

        public string TouchpadManufacturer {get; set;}

        public ISteeringWheelIdentifier Identifier {get;private set;}

    }

    public class Car 

    {

        public string CarBrand {get; set;}

        public ISteeringWheel SteeringWheel {get; set;}

    }

    public static void Main()

    {

        var car1 = new Car{CarBrand="Ford", SteeringWheel = new ModernSteeringWheel(new PartNumberIdentifier{PartNumber = "123456"})};

        var json = JsonConvert.SerializeObject(car1, Formatting.Indented);

        Console.WriteLine(json);

        var car2 = new Car{CarBrand="Toyota", SteeringWheel = new ClassicSteeringWheel(new ManufacturerIdentifier{ManufacturerEmail = "test@demo.com"})};

        json = JsonConvert.SerializeObject(car2, Formatting.Indented);

        Console.WriteLine(json);

    }

}