HeroListViewModel.swift

class HeroListViewModel {
   
   let mainTableItems: Driver<[HeroCellSection]>
   let searchTableItems: Driver<[HeroCellSection]>
   let dismissTrigger: Driver<Void>
   
   init(uiTriggers: (searchQuery: Observable<String>,
      nextPageTrigger: Observable<Void>,
      searchNextPageTrigger: Observable<Void>,
      dismissTrigger: Driver<Void>), api: HeroAPI) {
    
    
    searchTableItems = uiTriggers.searchQuery
        .filter { !$0.isEmpty }//1
        .throttle(0.3, scheduler: MainScheduler.instance)//2
        .flatMapLatest { //3
            return api.searchItems($0,
                batch: Batch.initial,
                endPoint: EndPoint.Characters,
                nextBatchTrigger: uiTriggers.searchNextPageTrigger) // 6
               .catchError { _ in
                  return Observable.empty()
               }
        }
        .map { //4
            return $0.map(HeroCellData.init)
        }
        .map {//5
            return [HeroCellSection(items: $0)]
        }
        .asDriver(onErrorJustReturn: [])
   ....
   }
}