svoid g22_runPostAnalysisLeftArrowScript(Gazelle22_ImageToRegions itr,
  GazelleV_LeftArrowScript.Script script) {
  if (script == null) ret;
  
  pcall {
  
    // def score region { ... }
    
    var fScore = script.getFunction("score");
    if (fScore != null) {
      int n = itr.nRegions();
      L<IImageRegion> regions = 
      double[] scores = new[n];
      for (int i = 1; i < n; i++)
        scores[i] = fScore.call(null, region);
      regions = iotaList(n);
      sortedBy
    }
  }
}