resizingIntervalUpdated method
The specified interval has been resized by a delta amount. If this interval is above the first item layouted in the list view, this amount will be added up to a cumulative variabile.
Implementation
@override
void resizingIntervalUpdated(_AnimatedSpaceInterval interval, double delta) {
super.resizingIntervalUpdated(interval, delta);
markSafeNeedsLayout();
}