static FaceFinderByPictures1 defaultFaceFinderByPictures() {
  FaceFinderByPictures1 finder = cast unstructFileOpt(ai_faceFinderDir(
    "Face Finder/smallest-finder-over-95.struct"));
  if (finder == null)
    finder = (FaceFinderByPictures1) unstruct(mL_raw("Demo Face Finder"));
  ret finder;
}