// getter and setter

        //methods of model
        public void SignOut()
        {
            var signInPage = new SignInPage();

            signInPage.Show();
            CloseWindowManager.CloseMainWindow();
        }
        public void SignOut()
        {
            // Chưa chạy chuẩn
            ConfirmDialog confirmDialog = new ConfirmDialog("SIGN OUT", "Are you really want to sign out?", () =>
            {
                SignInPage signInPage = new SignInPage();
                signInPage.Show();
                CloseWindowManager.CloseMainWindow();
            });

            confirmDialog.Show();
        }