public static extern void UnityARKit_createWorldMapRequestWithCallback(
     OnAsyncConversionCompleteDelegate callback,
     IntPtr context);
 public static void UnityARKit_createWorldMapRequestWithCallback(
     OnAsyncConversionCompleteDelegate callback,
     IntPtr context)
 {
     callback(ARWorldMapRequestStatus.ErrorNotSupported, ARWorldMap.k_InvalidHandle, context);
 }