svoid g22_runPostAnalysisLeftArrowScript(Gazelle22_ImageToRegions itr,
  GazelleV_LeftArrowScript.Script script) {
  if (script == null) ret;
  
  // def score region { ... }
  
  var fScore = script.getFunction("score");
  if (fScore != null) {
    L<IImageRegion<BWImage>> regions = itr.regions.regions();
    int n = l(regions);
    new Map<IImageRegion<BWImage>, Double> scores;
    for (region : regions)
      scores.put(region, toDouble(fScore.call(null, region)));
    itr.scoredRegions = mapSortedByValue(scores);
  }
}