code: public boolean isConsistent() {
          for (int i = 1; i < filledUpTo; i++) {
              int comp1 = KeyUtils.compareKey(maxKeyPerChunk[i], maxKeyPerChunk[i - 1]);
              if (comp1 <= 0) {
                  return false;
              }
          }
          return true;
      }
docs: Checks, if this index is consistent. All inserted keys have to be inserted incrementally.
  
  @return boolean