struct ContentView: View {
   @State private var appData = ApplicationData.shared

   var body: some View {
      VStack {
         Chart(appData.listOfItems) { item in
            SectorMark(angle: .value("Value", item.calories))
               .foregroundStyle(by: .value("Product category", item.name))
         }.frame(height: 300)
         .padding()
         Spacer()
      }
   }
}