}

        while ( true ) {
            Subject s = this.credentials.getSubject();
            if ( ctx == null ) {
                ctx = createContext(trans, tdomain, negoResp, !anonymous, s);
            }
            token = createToken(ctx, token, s);

            if ( token != null ) {

        final UpdateByQueryRequest request = new UpdateByQueryRequest(index).setQuery(QueryBuilders.idsQuery().addIds(id))
                .setScript(new Script(ScriptType.INLINE, "painless",
                        "ctx._source[params.f]=params.v;" + ComponentUtil.getLanguageHelper().getReindexScriptSource(),
                        Map.of("f", field, "v", value)));
        try {

                        searchHelper.update(id, builder -> {
                            final Script script = ComponentUtil.getLanguageHelper().createScript(doc,
                                    "ctx._source." + fessConfig.getIndexFieldFavoriteCount() + "+=1");
                            builder.setScript(script);
                            final Map<String, Object> upsertMap = new HashMap<>();

                ipc.send(new Trans2GetDfsReferral(ctx.getConfig(), path), resp);
                dfsResp = resp.getDfsResponse();
            }

            if ( dfsResp.getNumReferrals() == 0 ) {
                return null;
            }
            else if ( rn == 0 || dfsResp.getNumReferrals() < rn ) {
                rn = dfsResp.getNumReferrals();