docs: protected void objectsInserted(DBIDs ids) {
      final Logging log = getLogger(); // Could be subclass
      StepProgress stepprog = log.isVerbose() ? new StepProgress(3) : null;
  
      ArrayDBIDs aids = DBIDUtil.ensureArray(ids);
      // materialize the new kNNs
      log.beginStep(stepprog, 1, "New insertions ocurred, materialize their new kNNs.");
      // Bulk-query kNNs
      List<? extends KNNList> kNNList = knnQuery.getKNNForBulkDBIDs(aids, k);
      // Store in storage
      DBIDIter iter = aids.iter();
      for(int i = 0; i < aids.size(); i++, iter.advance()) {
        storage.put(iter, kNNList.get(i));
      }
  
      // update the affected kNNs
      log.beginStep(stepprog, 2, "New insertions ocurred, update the affected kNNs.");
      ArrayDBIDs rkNN_ids = updateKNNsAfterInsertion(ids);
  
      // inform listener
      log.beginStep(stepprog, 3, "New insertions ocurred, inform listeners.");
      fireKNNsInserted(ids, rkNN_ids);
  
      log.setCompleted(stepprog);
    }