private OIndexRIDContainer containerFromStream(String stream) {
stream = stream.substring(OStringSerializerHelper.LINKSET_PREFIX.length(), stream.length() - 1);
final ODocument doc = new ODocument();
doc.fromString(stream);
final OBonsaiBucketPointer rootPointer = new OBonsaiBucketPointer((Long) doc.field("rootIndex"),
(Integer) doc.field("rootOffset"));
final String fileName = doc.field("file");
return new OIndexRIDContainer(fileName, new OIndexRIDContainerSBTree(fileName, rootPointer, false), false, false);