/// This class takes care of managing persistence with regard to the information of the current game, allowing the last game played to be resumed even when returning to the menu or exiting the application.
/// </summary>
publicclassGamePersistenceXml:IGamePersistence
{
/// <summary>
/// The main purpose of this method is to save the data from the game when the user quits the app, so players can continue it later.
/// This is the persistence class for the leaderboard : it is in charge of managing all the parameters necessary for the backup and recovery of data concerning the leaderboard.