buf.append(',');
            buf.append("\"page_number\":");
            buf.append(currentPageNumber);
            buf.append(',');
            buf.append("\"record_count\":");
            buf.append(allRecordCount);
            buf.append(',');
            buf.append("\"record_count_relation\":");
            buf.append(escapeJson(allRecordCountRelation));
            buf.append(',');

     */
    protected static int copyInternal(final InputStream in, final OutputStream out) {
        try {
            final byte[] buf = new byte[DEFAULT_BUF_SIZE];
            int len;
            int amount = 0;
            while ((len = in.read(buf)) != -1) {
                out.write(buf, 0, len);
                amount += len;
            }
            out.flush();
            return amount;

    default String getLdapAdminUserSecurityPrincipal(final String name) {
        final StringBuilder buf = new StringBuilder(100);
        buf.append(String.format(getLdapAdminUserFilter(), name));
        if (StringUtil.isNotBlank(getLdapAdminUserBaseDn())) {
            buf.append(',').append(getLdapAdminUserBaseDn());
        }
        return buf.toString();
    }

    String getLdapAdminRoleObjectClasses();

         * calls doRecv() after and no one else but the transport thread
         * should call doRecv(). Therefore it is ok to expect that the data
         * in sbuf will be preserved for copying into BUF in doRecv().
         */

        return (long) Encdec.dec_uint16le(this.sbuf, 34) & 0xFFFF;
    }


    @Override
    protected void doSend ( Request request ) throws IOException {