using System;

using System.IO;

using YamlDotNet.Serialization;

​

class Program

{

    static void Main(string[] args)

    {

        var data = @"

z:  *anchor1

a: &anchor1 test0

b:

  b1: &anchor1 test1

  b2:

    b21:  &anchor1 test2

c:  *anchor1

";

        var deserializer = new DeserializerBuilder().Build();

        var yamlObject = deserializer.Deserialize(new StringReader(data));

        var serializer = new SerializerBuilder().JsonCompatible().Build();

        var json = serializer.Serialize(yamlObject);

        Console.WriteLine(json);

    }

}