builder.setSize(fessConfig.getPagingSearchPageMaxSizeAsInteger());
            builder.setFetchSource(fields, null);
            queryHelper.processSearchPreference(builder, userBean, String.join(StringUtil.EMPTY, docIds));
            return true;
        });
    }

    /**
     * Updates a single field of a document.
     *
     * @param id The document ID to update