dispose method
void
dispose()
Implementation
void dispose() {
if (shouldDisposeScrollController) {
scrollController.dispose();
}
if (!shrinkWrap) {
_scrollOffsetSubscription.cancel();
_itemPositionsListener.itemPositions.removeListener(_listenItemPositions);
(_itemPositionsListener as ItemPositionsNotifier?)
?.itemPositions
.dispose();
}
offsetNotifier.dispose();
visibleRangeNotifier.dispose();
}