items property
      
      PdfListFieldItemCollection
      get
      items
      
    
    
Gets the list field items.
Implementation
PdfListFieldItemCollection get items {
  if (_helper._items == null) {
    if (!_helper.isLoadedField) {
      _helper._items = PdfListFieldItemCollectionHelper.itemCollection();
      _helper.dictionary!.setProperty(
        PdfDictionaryProperties.opt,
        _helper._items,
      );
    } else {
      _helper._items = _getListItemCollection();
    }
  }
  return _helper._items!;
}