changeData property
The behavior of data reevaluation when widget is updated.
If null, new data will be compared with the old one, a ChangeDataEvent will be emitted and the chart will be reevaluated only when they are not the same instance.
If true, a ChangeDataEvent will always be emitted and the chart will always be reevaluated. So be cautious to set true.
If false, a ChangeDataEvent will never be emitted and the chart will never be reevaluated.
Implementation
final bool? changeData;