CliFx/CliFx.Demo/Models/Book.cs

using System;

namespace CliFx.Demo.Models
{
    public class Book
    {
        public string Title { get; }

        public string Author { get; }

        public DateTimeOffset Published { get; }

        public Isbn Isbn { get; }

        public Book(string title, string author, DateTimeOffset published, Isbn isbn)
        {
            Title = title;
            Author = author;
            Published = published;
            Isbn = isbn;
        }
    }
}