disabledItemsByTitles method Null safety

  1. @override
void disabledItemsByTitles(
  1. int index,
  2. List<String> items
)

disabled the items by there titles in groupedCheckBox

indexGroup : (List) strings that will be disabled

Implementation

@override
void disabledItemsByTitles(int index, List<String> items) {
  _state.listControllers[index].disabledItemsByTitles(items);
}