private static boolean initializersAreAtTheBeginning(IntList initializerPositions) {
      initializerPositions.sort(null);
      for (int i = 0; i < initializerPositions.size(); i++) {
        if (initializerPositions.getInt(i) != i) return false;
      }
      return true;
    }
private static boolean initializersAreAtTheBeginning(IntList initializerPositions)