private void lvSynergyV5ListItems_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            SynergyV5ListItemNode nd =
                (SynergyV5ListItemNode)lvSynergyV5ListItems.SelectedItem;

            if(nd != null)
            {
                SynergyV5ListItemClickedEventArgs args =
                    new SynergyV5ListItemClickedEventArgs(nd);

                OnSynergyV5ListItemClicked(args);
            }
        }
 protected virtual void OnSynergyV5ListItemClicked(
     SynergyV5ListItemClickedEventArgs args)
 {
     SynergyV5ListItemClicked?.Invoke(this, args);
 }