public GroupItemData(FunctionDescriptor.FunctionGroup grp, string name)
 {
     GroupDescriptor = grp;
     GroupName = name;
 }
 private void AddFunctionGroup(ListBox lbGroup, FunctionDescriptor.FunctionGroup functionGroup)
 {
     lbGroup.Items.Add(
         new GroupItemData(
             functionGroup, _fList.GetFunctionGroupString(functionGroup)
         )
     );
 }