class SameThreadScheduledExecutorService extends AbstractExecutorService
    implements ListeningScheduledExecutorService {

  private final ListeningExecutorService delegate = newDirectExecutorService();

  @Override
  public void shutdown() {
    delegate.shutdown();
  }

  @Override
  public List<Runnable> shutdownNow() {
    return delegate.shutdownNow();
  }

  @Override
  public boolean isShutdown() {

class SameThreadScheduledExecutorService extends AbstractExecutorService
    implements ListeningScheduledExecutorService {

  private final ListeningExecutorService delegate = newDirectExecutorService();

  @Override
  public void shutdown() {
    delegate.shutdown();
  }

  @Override
  public List<Runnable> shutdownNow() {
    return delegate.shutdownNow();
  }

  @Override
  public boolean isShutdown() {

     * @param dstIndex the starting index in the destination array
     * @param size the number of hex digits to write (will be left-padded with zeros)
     */
    public static void toHexChars(int val, final char dst[], final int dstIndex, int size) {
        while (size > 0) {
            final int i = dstIndex + size - 1;
            if (i < dst.length) {

    }

    /**
     * Remove all occurances of the given type
     *
     * @param pairs the list of AV pairs to modify
     * @param type the AV pair type to remove
     */
    public static void remove(final List<AvPair> pairs, final int type) {
        final Iterator<AvPair> it = pairs.iterator();
        while (it.hasNext()) {
            final AvPair p = it.next();
            if (p.getType() == type) {

    }

    /**
     * Sets whether to use the filename for MIME type detection.
     *
     * @param useFilename true to use the filename for MIME type detection, false otherwise
     */
    public void setUseFilename(final boolean useFilename) {
        this.useFilename = useFilename;
    }

    /**
     * Sets whether to use the filename for MIME type detection when the stream is octet-stream.
     *

     * it performs an update operation for the existing item.
     *
     * @param dictId The ID of the stemmer override dictionary
     * @param stemmerOvberrideItem The stemmer override item to store
     */
    public void store(final String dictId, final StemmerOverrideItem stemmerOvberrideItem) {
        getStemmerOverrideFile(dictId).ifPresent(file -> {
            if (stemmerOvberrideItem.getId() == 0) {

    static final int MAX_MESSAGE_SIZE = 0x0001FFFF;
    static final int HEADER_LENGTH = 4;

    static void writeInt2(final int val, final byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) (val >> 8 & 0xFF);
        dstIndex++;
        dst[dstIndex] = (byte) (val & 0xFF);
    }

    static void writeInt4(final int val, final byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) (val >> 24 & 0xFF);

     *
     * @param responseData The response data from the crawl operation.
     * @param resultData The result data from content processing.
     */
    @Override
    public void init(final ResponseData responseData, final ResultData resultData) {

        setCreateTime(System.currentTimeMillis());
        if (responseData != null) {
            BeanUtil.copyBeanToBean(responseData, this);

      int size = size();
      checkPositionIndex(index, size);
      return size - index;
    }

    @Override
    public void add(int index, @ParametricNullness T element) {
      forwardList.add(reversePosition(index), element);
    }

    @Override
    public void clear() {
      forwardList.clear();
    }

    @Override
    @ParametricNullness
    public T remove(int index) {

    //                                                                   =================
    @Override
    public void acceptPrimaryKeyMap(Entity entity, Map<String, ? extends Object> primaryKeyMap) {
    }

    @Override
    public void acceptAllColumnMap(Entity entity, Map<String, ? extends Object> allColumnMap) {
    }

    @Override