@CollectionSize.Require(absent = ZERO)
  public void testPutDuplicateValue() {
    List<Entry<K, V>> entries = copyToList(multimap().entries());

    for (Entry<K, V> entry : entries) {
      resetContainer();

      K k = entry.getKey();
      V v = entry.getValue();

      List<V> values = multimap().get(k);
      List<V> expectedValues = copyToList(values);

      assertTrue(multimap().put(k, v));

  // are guaranteed to be non-null.
  static <E> ImmutableList<E> unsafeDelegateList(List<? extends E> list) {
    switch (list.size()) {
      case 0:
        return of();
      case 1:
        return of(list.get(0));
      default:
        @SuppressWarnings("unchecked")
        List<E> castedList = (List<E>) list;
        return new RegularImmutableList<E>(castedList);
    }
  }

  /**

    }

    /**
     * Gets the list of page numbers for pagination navigation.
     *
     * @return the list of page numbers
     */
    public List<Integer> getPageNumberList() {
        return pageNumberList;
    }

    /**
     * Sets the list of page numbers for pagination navigation.
     *
     * @param pageNumberList the list of page numbers to set
     */

   * TestContainerGenerator#order(List)}. Tests should use this method only if they declare
   * requirement {@link com.google.common.collect.testing.features.CollectionFeature#KNOWN_ORDER}.
   */
  protected List<E> getOrderedElements() {
    List<E> list = new ArrayList<>();
    for (E e : getSubjectGenerator().order(new ArrayList<E>(getSampleElements()))) {
      list.add(e);
    }
    return unmodifiableList(list);

     */
    @Nonnull
    Optional<Boolean> updateSnapshots();

    /**
     * Returns the list of profiles to activate.
     *
     * @return an {@link Optional} containing the list of profile names to activate, or empty if not specified
     */
    @Nonnull
    Optional<List<String>> activatedProfiles();

    /**
     * Indicates whether Maven should suppress SNAPSHOT updates.
     *

        this.currentPageNumber = currentPageNumber;
    }

    /**
     * Gets the list of page numbers to display in the pagination component.
     *
     * @return the list of page numbers, or null if not set
     */
    public List<Integer> getPageNumberList() {
        return pageNumberList;
    }

    /**
     * Sets the list of page numbers to display in the pagination component.
     *

    }

    /**
     * Gets the list of page numbers for navigation.
     *
     * @return the page number list
     */
    public List<Integer> getPageNumberList() {
        return pageNumberList;
    }

    /**
     * Sets the list of page numbers for navigation.
     *
     * @param pageNumberList the page number list
     */

     * @return the local repository instance
     */
    @Nonnull
    LocalRepository getLocalRepository();

    /**
     * Retrieves a list of remote repositories associated with this session.
     *
     * @return a list of remote repositories
     */
    @Nonnull
    List<RemoteRepository> getRemoteRepositories();

    /**
     * Retrieves the session data associated with this session.
     *

    ListMultimap<String, Integer> multimap = create();
    multimap.putAll("foo", asList(1, 2, 3, 4, 5));
    List<Integer> list = multimap.get("foo");
    assertThat(multimap.get("foo")).containsExactly(1, 2, 3, 4, 5).inOrder();
    List<Integer> sublist = list.subList(0, 5);
    assertThat(sublist).containsExactly(1, 2, 3, 4, 5).inOrder();

    sublist.clear();
    assertTrue(sublist.isEmpty());

        if (g.getVertices().size() == 1) {
            return g;
        }

        List<MetadataGraphVertex> visited = new ArrayList<>(g.getVertices().size());
        visit(g.getEntry(), visited, g);

        List<MetadataGraphVertex> dropList = new ArrayList<>(g.getVertices().size());

        // collect drop list
        for (MetadataGraphVertex v : g.getVertices()) {
            if (!visited.contains(v)) {