docs: @Override
    protected void bulkLoad(List<RdKNNEntry> entries) {
      super.bulkLoad(entries);
  
      // adjust all knn distances
      ArrayModifiableDBIDs ids = DBIDUtil.newArray(entries.size());
      for(RdKNNEntry entry : entries) {
        DBID id = ((RdKNNLeafEntry) entry).getDBID();
        ids.add(id);
      }
      ids.sort();
      List<? extends KNNList> knnLists = knnQuery.getKNNForBulkDBIDs(ids, settings.k_max);
      adjustKNNDistance(getRootEntry(), ids, knnLists);
  
      // test
      doExtraIntegrityChecks();
    }