Fold.cs

		public static Model.ServerMessage Login(string username, string password)
		{
			return UserResource.Login( username, password ).Fold( 
			( message ) => {

				EndSession();

				return message;
			},
			( user) => {

				_instance = new Session();
				_instance.SetCredentials(user);

				StoreCredentials(username, password);
				RaiseLoggedInEvent();

				return Model.ServerMessage.LoggedInMessage;
			} );
		}