static unsafe bool AddImage(
     IntPtr database, IntPtr validator, void *bytes, TextureFormat format,
     int width, int height, float physicalWidth,
     ref ManagedReferenceImage managedReferenceImage)
 {
     throw new NotImplementedException("ARKit Plugin Provider not enabled in project settings.");
 }
 static extern unsafe bool AddImage(
     IntPtr database, IntPtr validator, void *bytes, TextureFormat format,
     int width, int height, float physicalWidth,
     ref ManagedReferenceImage managedReferenceImage);