prototypeItem property
Matches SliverPrototypeExtentList.prototypeItem.
If this is not null, itemExtent must be null, and vice versa.
Implementation
final Widget? prototypeItem;
Matches SliverPrototypeExtentList.prototypeItem.
If this is not null, itemExtent must be null, and vice versa.
final Widget? prototypeItem;