public void AddGroupComparison()
 {
     using (var editDlg = new EditGroupComparisonDlg(
         DocumentContainer,
         GroupComparisonDef.EMPTY.ChangeSumTransitions(true),
         Settings.Default.GroupComparisonDefList))
     {
         if (editDlg.ShowDialog(this) == DialogResult.OK)
         {
             var chosen = _groupComparisonsListBoxDriver.Chosen.ToList();
             Settings.Default.GroupComparisonDefList.Add(editDlg.GroupComparisonDef);
             chosen.Add(editDlg.GroupComparisonDef);
             _groupComparisonsListBoxDriver.LoadList(chosen);
         }
     }
 }