private void writeCoreExtension(CoreExtension coreExtension, String tagName, XmlSerializer serializer)
            throws IOException {
        serializer.startTag(NAMESPACE, tagName);
        if (coreExtension.getGroupId() != null) {
            serializer
                    .startTag(NAMESPACE, "groupId")
                    .text(coreExtension.getGroupId())
                    .endTag(NAMESPACE, "groupId");
        }

         *
         * @return a list of page numbers within the page range
         */
        public List<Integer> createPageNumberList() {
            int startPage = currentPageNumber - pageRangeSize;
            if (startPage < 1) {
                startPage = 1;
            }
            int endPage = currentPageNumber + pageRangeSize;
            if (endPage > allPageCount) {
                endPage = allPageCount;

     */

    /**
     * Encodes a 16-bit unsigned integer in big-endian byte order.
     *
     * @param s the short value to encode
     * @param dst the destination byte array
     * @param di the starting index in the destination array
     * @return the number of bytes written (2)
     */
    public static int enc_uint16be(final short s, final byte[] dst, int di) {
        dst[di] = (byte) (s >> 8 & 0xFF);
        di++;

    }

    /**
     * Writes a 16-bit integer value to a byte array in little-endian format
     * @param val the value to write
     * @param dst the destination byte array
     * @param dstIndex the starting index in the destination array
     */
    public static void writeInt2(final long val, final byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) val;
        dstIndex++;
        dst[dstIndex] = (byte) (val >> 8);

     */

    /**
     * Encodes a 16-bit unsigned integer in big-endian byte order.
     *
     * @param s the short value to encode
     * @param dst the destination byte array
     * @param di the starting index in the destination array
     * @return the number of bytes written (2)
     */
    public static int enc_uint16be(final short s, final byte[] dst, int di) {
        dst[di] = (byte) (s >> 8 & 0xFF);
        di++;

     * @param dst destination buffer
     * @param dstIndex starting index in destination buffer
     * @return number of bytes written
     */
    protected abstract int writeSetupWireFormat(byte[] dst, int dstIndex);

    /**
     * Writes parameters in wire format
     * @param dst destination buffer
     * @param dstIndex starting index in destination buffer
     * @return number of bytes written
     */

      this.state = state;
    }

    @Override
    public void starting() {
      ServiceManagerState state = this.state.get();
      if (state != null) {
        state.transitionService(service, NEW, STARTING);
        if (!(service instanceof NoOpService)) {
          logger.get().log(Level.FINE, "Starting {0}.", service);
        }
      }
    }

    @Override
    public void running() {

      this.state = state;
    }

    @Override
    public void starting() {
      ServiceManagerState state = this.state.get();
      if (state != null) {
        state.transitionService(service, NEW, STARTING);
        if (!(service instanceof NoOpService)) {
          logger.get().log(Level.FINE, "Starting {0}.", service);
        }
      }
    }

    @Override
    public void running() {

        }
    }

    /**
     * Decodes a string from UTF-16LE (Unicode Little Endian) bytes.
     *
     * @param src the byte array containing the encoded string
     * @param srcIndex the starting offset in the byte array
     * @param len the number of bytes to decode
     * @return decoded string
     */
    public static String fromUNIBytes(final byte[] src, final int srcIndex, final int len) {

     */
    public void setExistPrevPage(final boolean existPrevPage) {
        this.existPrevPage = existPrevPage;
    }

    /**
     * Sets the starting record number for the current page.
     *
     * @param currentStartRecordNumber The starting record number
     */
    public void setCurrentStartRecordNumber(final long currentStartRecordNumber) {
        this.currentStartRecordNumber = currentStartRecordNumber;