using System;

using System.Text.Json;

using AgileObjects.AgileMapper;

​

public class Program

{

    public static void Main()

    {

        Mapper.WhenMapping

            .From<JsonDocument>()

            .To<JsonDocument>()

            .CreateInstancesUsing(ctx => JsonDocument.Parse(ctx.Source.RootElement.GetRawText(), default));

        string p = "[{\"a\":\"new\"}]";

        JsonDocument source = JsonDocument.Parse(p);

        JsonDocument result = Mapper.Map(source).ToANew<JsonDocument>();

        Console.WriteLine("Source: " + source.RootElement);

        Console.WriteLine("Result: " + result.RootElement);

        Console.WriteLine("Equal? " + source.RootElement.Equals(result.RootElement));

        NewClassA A = new NewClassA();

        NewClassB B = new NewClassB();

        var mapper = Mapper.Map(A).Over(B);

        Console.WriteLine("Source: " + A.Json.RootElement);

        Console.WriteLine("Result: " +  mapper.Json.RootElement);

        Console.WriteLine("Result: " +  B.Json.RootElement);

        Console.WriteLine("Equal? " + A.Json.RootElement.Equals(mapper.Json.RootElement));

    }

    public class NewClassA

    {

        public JsonDocument Json {get;set;}

        public NewClassA(){

            Json = JsonDocument.Parse( "[{\"a\":\"old\"}]");

        }

    }

    public class NewClassB

    {

        public JsonDocument Json {get;set;}

    }

}