return null;
					public Object start() throws ReadOnlyException {						try {							domDb.addValue(								new NodeRef(doc.getDocId(), gid),								node.getInternalAddress());						} catch (BTreeException e) {							LOG.warn(EXCEPTION_DURING_REINDEX, e);						} catch (IOException e) {							LOG.warn(EXCEPTION_DURING_REINDEX, e);						}						return null;					}