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public struct ContentView: View {
    @State var model = MyModel()
    
    public init() {
    }

    public var body: some View {
        VStack {
            ForEach(model.items) { item in
                Text(item.title)
            }
        }
    }
}

@Observable
public class MyModel {
    private var itemList: ItemList = ItemList()
    public var items: [Item] {
        self.itemList.items
    }

  // COMMENT: MY ACTUAL CODE
  // private var itemLists: [ItemList] = [ItemList()]
  // public var items: [Item] {
        // self.itemLists.flatMap(\.items)
  // }
}

@Observable
public class ItemList {
    var items: [Item] = []
    
    init() {
        Task {
            try await Task.sleep(nanoseconds: 100_000_00)
            self.items = [Item(id: UUID(), title: "First")]
        }
        
    }
}

public struct Item: Identifiable {
    public let id: UUID
    public var title: String
}