@Override
 public SimpleDoubleScore buildPessimisticBound(
     InitializingScoreTrend initializingScoreTrend, SimpleDoubleScore score) {
   InitializingScoreTrendLevel[] trendLevels = initializingScoreTrend.getTrendLevels();
   return SimpleDoubleScore.valueOf(
       0,
       trendLevels[0] == InitializingScoreTrendLevel.ONLY_UP
           ? score.getScore()
           : Double.NEGATIVE_INFINITY);
 }