Using Group tasks to synchronize networking calls.

GroupTaskImplemnetation.swift

    // MARK:- Async/await Group task
// 1
    @available(iOS 15, *)
    func asyncGroups(
        from categoryIdentifiers: [ItunesCategoryIdentifier]) {
      // 2
        Task.init {
          // 3
            var sections: [ItunesCategorySection] = []
          // 4
            try await withThrowingTaskGroup(of: ItunesCategorySection.self) { categorySection in
                                                                             // 5
                for categoryIdentifier in categoryIdentifiers {
                  // 6
                    categorySection.addTask {
                        let feedItemViewModels = try await self.service.clientFetchAsync(Feed<ItunesResources<FeedItem>>.self, itunes: Itunes(mediaTypePath: categoryIdentifier.mediaType)).feed?.results.map { FeedItemViewModel(model: $0) } ?? []
                        return ItunesCategorySection(sectionID: categoryIdentifier, cellIDs: feedItemViewModels)
                    }
                }
                                                                             // 7
                for try await itunesCategorySection in categorySection {
                  // 8
                    sections.append(itunesCategorySection)
                }
            }
          // 9
            self.itunesSections = sections.sorted { $0.sectionID.rawValue < $1.sectionID.rawValue }
        }
    }