private void Toolbar_MenuItemClick(object sender, AndroidX.AppCompat.Widget.Toolbar.MenuItemClickEventArgs e)
        {
            IMainScreenToolbarHandler handler = _contentPresenter?.CurrentView as IMainScreenToolbarHandler;

            if (handler != null)
            {
                handler.OnMenuItemClick(e);
            }
        }
        private void _contentPresenter_ContentChanged(object sender, EventArgs e)
        {
            IMainScreenToolbarHandler handler = _contentPresenter?.CurrentView as IMainScreenToolbarHandler;

            if (handler != null)
            {
                handler.RequestUpdateMenu();
            }
            else
            {
                Toolbar.Menu.Clear();
            }
        }