*
     * @param elements the {@code Iterable} to add to the {@code ImmutableList}
     * @return this {@code Builder} object
     * @throws NullPointerException if {@code elements} is null or contains a null element
     */
    @CanIgnoreReturnValue
    @Override
    public Builder<E> addAll(Iterable<? extends E> elements) {
      super.addAll(elements);
      return this;
    }

    }

    /**
     * @throws Exception
     */
    @Test(expected = ClIllegalArgumentException.class)
    public void testInterface() throws Exception {
        new ClassIterator(Iterable.class);
    }

  }

  public <K, V> void testWhere_actualArgHasWildcard() {
    TypeResolver resolver =
        new TypeResolver()
            .where(
                new TypeCapture<Iterable<Map<?, V>>>() {}.capture(),
                new TypeCapture<Iterable<Map<String, Integer>>>() {}.capture());
    assertEquals(
        new TypeCapture<K>() {}.capture(), resolver.resolveType(new TypeCapture<K>() {}.capture()));

 * should use the type safe {@link #putInstance}.
 *
 * <p>Also, if caller suppresses unchecked warnings and passes in an {@code Iterable<String>} for
 * type {@code Iterable<Integer>}, the map won't be able to detect and throw type error.
 *
 * <p>Like any other {@code Map<Class, Object>}, this map may contain entries for primitive types,

 * should use the type safe {@link #putInstance}.
 *
 * <p>Also, if caller suppresses unchecked warnings and passes in an {@code Iterable<String>} for
 * type {@code Iterable<Integer>}, the map won't be able to detect and throw type error.
 *
 * <p>Like any other {@code Map<Class, Object>}, this map may contain entries for primitive types,

        if (!current) {
            elements << (Element) document.importNode(node, true)
        } else  {
            current.appendChild(document.importNode(node, true))
        }
    }

    def appendChildren(Iterable<? extends Node> nodes) {
        nodes.each { appendChild(it) }
    }

    def appendChildren(NodeList nodes) {
        nodes.each { appendChild(it) }
    }

    def text(String text) {

   * <? extends Object> is mostly the same as <?> to plain Java. But to nullness checkers, they
   * differ: <? extends Object> means "non-null types," while <?> means "all types."
   */
  public ImmutableMap<K, V> getAllPresent(Iterable<? extends Object> keys) {
    return delegate().getAllPresent(keys);
  }

  /** @since 11.0 */
  @Override
  public void put(K key, V value) {
    delegate().put(key, value);
  }

  /** @since 12.0 */

    assertEmpty(
        new Iterable<Object>() {
          @Override
          public Iterator<Object> iterator() {
            return emptyList().iterator();
          }
        });

    list.add("a");
    try {
      assertEmpty(list);
      throw new Error();
    } catch (AssertionFailedError expected) {
    }
    try {
      assertEmpty(
          new Iterable<String>() {
            @Override

    assertEmpty(
        new Iterable<Object>() {
          @Override
          public Iterator<Object> iterator() {
            return emptyList().iterator();
          }
        });

    list.add("a");
    try {
      assertEmpty(list);
      throw new Error();
    } catch (AssertionFailedError expected) {
    }
    try {
      assertEmpty(
          new Iterable<String>() {
            @Override

  }

  public <K, V> void testWhere_actualArgHasWildcard() {
    TypeResolver resolver =
        new TypeResolver()
            .where(
                new TypeCapture<Iterable<Map<?, V>>>() {}.capture(),
                new TypeCapture<Iterable<Map<String, Integer>>>() {}.capture());
    assertEquals(
        new TypeCapture<K>() {}.capture(), resolver.resolveType(new TypeCapture<K>() {}.capture()));