toStringShort method
- @override
 
A short, textual description of this widget.
Implementation
@override
String toStringShort() {
  return key == null ? '$runtimeType' : '$runtimeType-$key';
}
    A short, textual description of this widget.
@override
String toStringShort() {
  return key == null ? '$runtimeType' : '$runtimeType-$key';
}