SliverGridDelegate.extend constructor Null safety
Implementation
const factory SliverGridDelegate.extend({
required double maxCrossAxisExtent,
@Default(0.0) double mainAxisSpacing,
@Default(0.0) double crossAxisSpacing,
@Default(1.0) double childAspectRatio,
double? mainAxisExtent,
}) = SliverGridDelegateWithMaxCrossAxisExtent;