code: public static BendableScore ofHard(int hardLevelsSize, int softLevelsSize, int hardLevel, int hardScore) {
          int[] hardScores = new int[hardLevelsSize];
          hardScores[hardLevel] = hardScore;
          return new BendableScore(0, hardScores, new int[softLevelsSize]);
      }
docs: Creates a new {@link BendableScore}.
  @param hardLevelsSize at least 0
  @param softLevelsSize at least 0
  @param hardLevel at least 0, less than hardLevelsSize
  @param hardScore any
  @return never null