SaveSystem.SaveUser C# (CSharp) Method

        public static void SaveUser()
        {
            BinaryFormatter formatter = new BinaryFormatter();
            FileStream stream = new FileStream(path, FileMode.Create);
            formatter.Serialize(stream, new UserData());
            stream.Close();
        }
        public static UserData LoadData()

 public void Restart()
 {
     SaveSystem.SaveUser(user);
     SceneManager.LoadScene("main");
     UI.UIMode(false);
     userDataSet = false;
 }