listener.warning(String.format("Unsupported HTML element <%s>", elementName));
            Element element = document.createElement("UNHANDLED-ELEMENT");
            element.appendChild(document.createTextNode(String.format("<%s>", elementName)));
            nodes.push(element);
            return true;
        }

        @Override
        public void onText(String text) {

  /** Creates a new {@link Closer}. */
  public static Closer create() {
    return new Closer(SUPPRESSING_SUPPRESSOR);
  }

  @VisibleForTesting final Suppressor suppressor;

  // only need space for 2 elements in most cases, so try to use the smallest array possible
  private final Deque<Closeable> stack = new ArrayDeque<>(4);
  private @Nullable Throwable thrown;

  @VisibleForTesting
  Closer(Suppressor suppressor) {

    @ParametricNullness
    public V set(int index, @ParametricNullness V element) {
      refreshIfEmpty();
      return getListDelegate().set(index, element);
    }

    @Override
    public void add(int index, @ParametricNullness V element) {
      refreshIfEmpty();
      boolean wasEmpty = getDelegate().isEmpty();
      getListDelegate().add(index, element);
      totalSize++;
      if (wasEmpty) {
        addToMap();

    /**
     * This default mode for combining children DOMs during merge means that where element names match, the process will
     * try to merge the element data, rather than putting the dominant and recessive elements (which share the same
     * element name) as siblings in the resulting DOM.
     */
    @Deprecated(since = "4.0.0", forRemoval = true)

              protected Set<Integer> delegate() {
                return backing;
              }

              @Override
              public boolean add(Integer element) {
                checkArgument(element >= 0);
                return super.add(element);
              }

              @Override
              public boolean addAll(Collection<? extends Integer> collection) {

  private static final ImmutableRangeMap<Comparable<?>, Object> EMPTY =
      new ImmutableRangeMap<>(ImmutableList.of(), ImmutableList.of());

  /**
   * Returns a {@code Collector} that accumulates the input elements into a new {@code
   * ImmutableRangeMap}. As in {@link Builder}, overlapping ranges are not permitted.
   *
   * @since 23.1
   */
  public static <T extends @Nullable Object, K extends Comparable<? super K>, V>

  public boolean containsKey(Object key) {
    return map.containsKey(key);
  }

  /**
   * Returns the number of key-value mappings in this map. If the map contains more than {@code
   * Integer.MAX_VALUE} elements, returns {@code Integer.MAX_VALUE}.
   */
  public int size() {
    return map.size();
  }

  /** Returns {@code true} if this map contains no key-value mappings. */
  public boolean isEmpty() {

 * invoke methods, they invoke methods on the {@code ForwardingNavigableMap}.
 *
 * <p>Each of the {@code standard} methods uses the map's comparator (or the natural ordering of the
 * elements, if there is no comparator) to test element equality. As a result, if the comparator is
 * not consistent with equals, some of the standard implementations may violate the {@code Map}
 * contract.
 *

 * invoke methods, they invoke methods on the {@code ForwardingNavigableMap}.
 *
 * <p>Each of the {@code standard} methods uses the map's comparator (or the natural ordering of the
 * elements, if there is no comparator) to test element equality. As a result, if the comparator is
 * not consistent with equals, some of the standard implementations may violate the {@code Map}
 * contract.
 *

     * </ul>
     * <p>
     * <strong>Maven 3 Compatibility:</strong> This behavior maintains compatibility with Maven 3.x,
     * where resource {@code targetPath} elements were always interpreted as relative to the output directory
     * ({@code project.build.outputDirectory} or {@code project.build.testOutputDirectory}),