* elements.
   */
  @SafeVarargs
  public static <T extends @Nullable Object> Iterator<T> cycle(T... elements) {
    return cycle(Lists.newArrayList(elements));
  }

  /**
   * Returns an Iterator that walks the specified array, nulling out elements behind it. This can
   * avoid memory leaks when an element is no longer necessary.
   *

  public void testHashCode_containingNull() {
    Collection<E> elements = getSampleElements(getNumElements() - 1);
    int expectedHashCode = 0;
    for (E element : elements) {
      expectedHashCode += (element == null) ? 0 : element.hashCode();
    }

    elements.add(null);
    collection = getSubjectGenerator().create(elements.toArray());
    assertEquals(

     * For example, if this type is {@link #MODULES}, then the option is {@code "--module-path"}
     * followed by the specified path elements.
     * The paths are not quoted.
     *
     * @param paths the path to format as a tool option
     * @return the option associated to this path type followed by the given path elements,

        project.setArtifacts(resolver.resolve(project, Collections.singleton(Artifact.SCOPE_COMPILE), session));

        List<String> elements = project.getCompileClasspathElements();
        assertEquals(2, elements.size());

        @SuppressWarnings("deprecation")
        List<Artifact> artifacts = project.getCompileArtifacts();
        assertEquals(1, artifacts.size());

  // also mean that the iterator returns the head element first, which those
  // don't.

  public Test testsForPriorityBlockingQueue() {
    return QueueTestSuiteBuilder.using(
            new TestStringQueueGenerator() {
              @Override
              public Queue<String> create(String[] elements) {
                return new PriorityBlockingQueue<>(MinimalCollection.of(elements));
              }
            })

  /**
   * Inserts the specified element into this priority queue.
   *
   * @param e the element to add
   * @return {@code true} (as specified by {@link Queue#offer})
   * @throws ClassCastException if the specified element cannot be compared with elements currently
   *     in the priority queue according to the priority queue's ordering
   * @throws NullPointerException if the specified element is null
   */

                  @Override
                  protected Set<String> create(String[] elements) {
                    // Put the sets in different orders for the hell of it
                    return union(
                        new LinkedHashSet<>(asList(elements[0], elements[1], elements[2])),
                        new LinkedHashSet<>(asList(elements[1], elements[0], elements[2])));
                  }
                })

   * which the elements appear in the given collection.
   *
   * @param elements the elements, all of the same {@code enum} type, that the set should contain
   * @return an immutable set containing those elements, minus duplicates
   */
  public static <E extends Enum<E>> ImmutableSet<E> immutableEnumSet(Iterable<E> elements) {
    if (elements instanceof ImmutableEnumSet) {

        elements[i] = entry.getElement();
        counts[i] = entry.getCount();
        i++;
      }
    }

    Object readResolve() {
      ImmutableMultiset.Builder<Object> builder =
          new ImmutableMultiset.Builder<Object>(elements.length);
      for (int i = 0; i < elements.length; i++) {
        builder.addCopies(elements[i], counts[i]);
      }

            new TestEnumSetGenerator() {
              @Override
              public Set<AnEnum> create(AnEnum[] elements) {
                return (elements.length == 0)
                    ? EnumSet.noneOf(AnEnum.class)
                    : EnumSet.copyOf(MinimalCollection.of(elements));
              }
            })
        .named("EnumSet")
        .withFeatures(
            SetFeature.GENERAL_PURPOSE,