SdlAppIterateFuncDart typedef
        SdlAppIterateFuncDart =
     int Function(Pointer<NativeType>  appstate)
    
    
    
Implementation
typedef SdlAppIterateFuncDart = int Function(Pointer<NativeType> appstate);typedef SdlAppIterateFuncDart = int Function(Pointer<NativeType> appstate);