Write to XML File C#

XMLtoFile.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Serialization;

namespace JanteqTestConsoleApplication
{
    public class Program
    {
        static void Main(string[] args)
        {
            WriteXML();
        }


        public class Book
        {
            public String title;
            public Author author;
            public void Read()
            {

            }
        }

        public class Author
        {
            public String name;
        }


        public static void WriteXML()
        {
            Book overview = new Book();
            overview.title = "Serialization Overview";
            overview.author = new Author();
            overview.author.name = "Ian Jackson";
            System.Xml.Serialization.XmlSerializer writer =
                new System.Xml.Serialization.XmlSerializer(typeof(Book));

            var path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "//TestXML.xml";
            System.IO.FileStream file = System.IO.File.Create(path);

            writer.Serialize(file, overview);
            file.Close();
        }
    }
}