if (set.isEmpty()) {
        /*
         * The (tooLow + 1, tooHigh) arguments below would be invalid because tooLow would be
         * greater than tooHigh.
         */
        return ContiguousSet.create(Range.openClosed(0, 1), DiscreteDomain.integers()).subSet(0, 1);
      }
      int tooHigh = set.last() + 1;
      int tooLow = set.first() - 1;
      set.add(tooHigh);

  /**
   * In some cases our graph implementations return custom sets that define their own size() and
   * contains(). Verify that these sets are consistent with the elements of their iterator.
   */
  @CanIgnoreReturnValue
  static <T> Set<T> sanityCheckSet(Set<T> set) {
    assertThat(set).hasSize(Iterators.size(set.iterator()));
    for (Object element : set) {
      assertThat(set).contains(element);
    }

  private Iterable<List<Object>> buildCartesianProduct(Set<?>... sets) {
    List<Set<Optional<?>>> optionalSets = Lists.newArrayListWithExpectedSize(sets.length);
    for (Set<?> set : sets) {
      Set<Optional<?>> optionalSet =
          Sets.newLinkedHashSet(Iterables.transform(set, NULLABLE_TO_OPTIONAL));
      optionalSets.add(optionalSet);
    }
    Set<List<Optional<?>>> cartesianProduct = Sets.cartesianProduct(optionalSets);

     */
    String getMethod();

    /**
     * Sets the HTTP method for the URL queue.
     *
     * @param method the HTTP method to be set (e.g., GET, POST, etc.)
     */
    void setMethod(String method);

    /**
     * Retrieves the URL from the queue.
     *
     * @return the URL as a String.
     */
    String getUrl();

    /**
     * Sets the URL for this UrlQueue.
     *

     *
     * @return The onDestroy listener, or null if not set
     */
    public OnDestroyListener<T> getOnDestroyListener() {
        return onDestroyListener;
    }

    /**
     * Sets the onDestroy listener.
     *
     * @param onDestroyListener The onDestroy listener to set
     */
    public void setOnDestroyListener(final OnDestroyListener<T> onDestroyListener) {

        if (StringUtil.isNotEmpty(resourceName)) {
            metadata.set(ExtractData.RESOURCE_NAME_KEY, resourceName);
        }
        if (StringUtil.isNotBlank(contentType)) {
            metadata.set(ExtractData.CONTENT_TYPE, contentType);
        }
        if (StringUtil.isNotBlank(contentEncoding)) {
            metadata.set(ExtractData.CONTENT_ENCODING, contentEncoding);
        }
        if (pdfPassword != null) {

    }

    /**
     * Gets the character set of the response.
     *
     * @return the character set, or null if not specified
     */
    public String getCharSet() {
        return charSet;
    }

    /**
     * Sets the character set of the response.
     *
     * @param charSet the character set to set
     */
    public void setCharSet(final String charSet) {

    private int mode;
    private long offset;

    /**
     * Sets the file identifier.
     *
     * @param fid
     *            the fid to set
     */
    public void setFid(final int fid) {
        this.fid = fid;
    }

    /**
     * Sets the seek mode.
     *
     * @param mode
     *            the mode to set
     */
    public final void setMode(final int mode) {
        this.mode = mode;

     * @param contentLoc the content URL to set
     */
    public void setContentLoc(final String contentLoc) {
        this.contentLoc = contentLoc;
    }

    /**
     * Gets the player location URL.
     * @return the player URL
     */
    public String getPlayerLoc() {
        return playerLoc;
    }

    /**
     * Sets the player location URL.

            return false;
        }
        return true;
    }

    /**
     * Returns a set of matched label values.
     *
     * @param path The path to match.
     * @return A set of matched label values.
     */
    public Set<String> getMatchedLabelValueSet(final String path) {
        if (labelTypePatternList == null) {
            synchronized (this) {