dispose method
void
dispose()
dispose all
Implementation
void dispose() {
if (_notifier != null) {
SparkDataChangeNotifier _temp = _notifier!;
_notifier = null;
_temp.dispose();
}
if (_focusNode != null) {
FocusNode _temp = _focusNode!;
_focusNode = null;
_temp.dispose();
}
clickCallback = null;
}