return base;
    }

    /**
     * Build a full SMB2 packet combining header and provided body, optionally injecting context bytes.
     */
    private static byte[] buildPacket(byte[] header, byte[] body, Integer ctxOffsetFromHeader, byte[] ctxBytes) {
        int totalLen;
        if (ctxOffsetFromHeader != null && ctxBytes != null) {

            if (highlightInfo != null) {
                buildHighlighter(queryHelper, queryFieldConfig, fessConfig);
            }

            // facets
            if (facetInfo != null) {
                buildFacet(queryHelper, queryFieldConfig, fessConfig);
            }

            if (!SearchRequestType.ADMIN_SEARCH.equals(searchRequestType) && !isScroll && fessConfig.isResultCollapsed()