using System;

using System.Collections.Generic;

using System.Text.Json;

​

class Foo

{

    public string Name { get; set; } = "Test";

    public List<string> Bars { get; set; } = [];

}

​

class Foo2

{

    public string Name { get; set; } = "Test";

    public List<string>? Bars { get; set; }

}

​

public class Program

{

    public static void Main()

    {

        var foo = new Foo();

        var json = JsonSerializer.Serialize(foo);

        Console.WriteLine(json);

​

        var foo2 = new Foo2();

        var json2 = JsonSerializer.Serialize(foo2);

        Console.WriteLine(json2);

    }

}