carousel_load_event.dart

//1
class CarouselLoadEvent extends MovieCarouselEvent {
  //2
  final int defaultIndex;
  //3
  const CarouselLoadEvent({this.defaultIndex = 0}): 
    assert(defaultIndex >= 0, 'defaultIndex cannot be less than 0');
  //4
  @override
  List<Object> get props => [defaultIndex];
}