docs: public List<MtasTokenString> getPrefixFilteredObjectsByPositions(String field,
        int docId, List<String> prefixes, int startPosition, int endPosition)
        throws IOException {
      IndexDoc doc = getDoc(field, docId);
      IndexInput inIndexObjectPosition = indexInputList
          .get("indexObjectPosition");
      if (doc != null) {
        ArrayList<MtasTreeHit<?>> hits = CodecSearchTree.searchMtasTree(
            startPosition, endPosition, inIndexObjectPosition,
            doc.fpIndexObjectPosition, doc.smallestObjectFilepointer);
        return getPrefixFilteredObjects(hits, prefixes);
      } else {
        return new ArrayList<>();
      }
    }