using System;

using System.Linq;

using System.Text.Json;

​

​

public class Program

{

    public static void Main()

    {

        var phoneNumberUtil = PhoneNumbers.PhoneNumberUtil.GetInstance();

        var e164PhoneNumber = "+351915512170";

        var phoneNumber = phoneNumberUtil.Parse(e164PhoneNumber, null);

        var json = Newtonsoft.Json.JsonConvert.SerializeObject(phoneNumber, new Newtonsoft.Json.JsonSerializerSettings

            {

                ContractResolver = new Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver(),

                NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore,

                Formatting = Newtonsoft.Json.Formatting.Indented,

                ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore,

            });

        Console.WriteLine(json);

        string jsonString=  JsonSerializer.Serialize(phoneNumber);

        Console.WriteLine(jsonString);

    }

}