public static void resized(Long galleryId, Long pictureId) {
   File picture = Picture.getFile(galleryId, pictureId, Application.RESIZED);
   if (!picture.exists()) notFound();
   renderBinary(picture);
 }
 public static void thumbnail(Long galleryId, Long pictureId) {
   File picture = Picture.getFile(galleryId, pictureId, Application.THUMBNAILS);
   if (!picture.exists()) notFound();
   renderBinary(picture);
 }