itemBuilder method
Implementation
Widget itemBuilder(BuildContext context, int index) {
final Widget child = widget.itemBuilder(context, index);
assert(child.key != null, 'All list items must have a key');
final OverlayState overlay = Overlay.of(context, debugRequiredFor: widget);
return MultiLevelDraggableChild(
key: child.key,
index: index,
capturedThemes:
InheritedTheme.capture(from: context, to: overlay.context),
child: child,
);
}