using System;

public class Program

{

    public sealed record Stuff(int MyProperty, string ImutableProperty, DateTimeOffset AnotherProperty)

    {

        public int MyProperty { get; private set; } = MyProperty;

        public DateTimeOffset AnotherProperty { get; set; } = AnotherProperty;

        public void SetMyProperty(int value) => MyProperty = value;

    }

    public static void Main()

    {

        var stuff = new Stuff(3, "four", DateTimeOffset.MinValue)

;

        Console.Write($"{stuff.MyProperty},{stuff.ImutableProperty},");

        stuff.SetMyProperty(5);

        stuff.AnotherProperty = DateTimeOffset.UtcNow;

        Console.WriteLine(stuff.MyProperty);

    }

}