public EditStageTreeViewItem(string label, EditStageTreeViewItem parent)
            : base(parent, false)
        {
            Label = label;

            OnItemSelected += EditStageTreeViewItem_OnItemSelected;
        }
 public EditStageTreeViewItem(string label, EditStageTreeViewItem parent, bool stageValid)
     : base(parent, false)
 {
     Label       = label;
     _stageValid = stageValid;
 }