srecord noeq G22MaskUtils(G22Utils g22utils) {
  <A> IG22SimpleMasksHolder<A> simpleMaskSet() {
    ret new G22HashedMasks;
  }
  
  <A> IG22MasksHolder<A> optimizedMaskSet(IG22MasksHolder<A> masks) {
    var search = new G22CriticalPixelSearch(masks);
    ret search.bestTree();
  }
}