disabledItemsByValues method Null safety

  1. @override
void disabledItemsByValues(
  1. List itemsValues
)

disabled the items by there values in groupedCheckBox

itemsValues : (List) values that will be disabled

Implementation

@override
void disabledItemsByValues(List<dynamic> itemsValues) =>
    _widgetState.disabledItemsByValues(itemsValues);