@MarshalsPointer
 public static long toNative(List<CIContextOptions> l, long flags) {
   if (l == null) {
     return 0L;
   }
   NSArray<NSDictionary> array = new NSMutableArray<>();
   for (CIContextOptions i : l) {
     array.add(i.getDictionary());
   }
   return NSObject.Marshaler.toNative(array, flags);
 }