}

  /**
   * Returns {@code true} if the collection {@code self} contains all of the elements in the
   * collection {@code c}.
   *
   * <p>This method iterates over the specified collection {@code c}, checking each element returned
   * by the iterator in turn to see if it is contained in the specified collection {@code self}. If
   * all elements are so contained, {@code true} is returned, otherwise {@code false}.
   *

    checkNotNull(multiset1);
    checkNotNull(multiset2);

    return new ViewMultiset<E>() {
      @Override
      public boolean contains(@CheckForNull Object element) {
        return multiset1.contains(element) || multiset2.contains(element);
      }

      @Override
      public boolean isEmpty() {
        return multiset1.isEmpty() && multiset2.isEmpty();
      }

      @Override

  }

  /**
   * Returns the single element contained in {@code iterable}.
   *
   * <p><b>Java 8+ users:</b> the {@code Stream} equivalent to this method is {@code
   * stream.collect(MoreCollectors.onlyElement())}.
   *
   * @throws NoSuchElementException if the iterable is empty
   * @throws IllegalArgumentException if the iterable contains multiple elements
   */
  @ParametricNullness

      }
    }
  }

  public void testContains() {
    assertThat(Booleans.contains(EMPTY, false)).isFalse();
    assertThat(Booleans.contains(ARRAY_FALSE, true)).isFalse();
    assertThat(Booleans.contains(ARRAY_FALSE, false)).isTrue();
    assertThat(Booleans.contains(ARRAY_FALSE_TRUE, false)).isTrue();
    assertThat(Booleans.contains(ARRAY_FALSE_TRUE, true)).isTrue();
  }

  public void testIndexOf() {

      }
    }
  }

  public void testContains() {
    assertThat(Booleans.contains(EMPTY, false)).isFalse();
    assertThat(Booleans.contains(ARRAY_FALSE, true)).isFalse();
    assertThat(Booleans.contains(ARRAY_FALSE, false)).isTrue();
    assertThat(Booleans.contains(ARRAY_FALSE_TRUE, false)).isTrue();
    assertThat(Booleans.contains(ARRAY_FALSE_TRUE, true)).isTrue();
  }

  public void testIndexOf() {

        .inOrder();
  }

  public void testCartesianProduct_contains() {
    Set<List<Integer>> actual = Sets.cartesianProduct(set(1, 2), set(3, 4));
    assertTrue(actual.contains(list(1, 3)));
    assertTrue(actual.contains(list(1, 4)));
    assertTrue(actual.contains(list(2, 3)));
    assertTrue(actual.contains(list(2, 4)));
    assertFalse(actual.contains(list(3, 1)));
  }

  public void testCartesianProduct_equals() {

  public void testCopyOf_collection_general() {
    Collection<String> c = MinimalCollection.of("a", "b", "a");
    Set<String> set = copyOf(c);
    assertEquals(2, set.size());
    assertTrue(set.contains("a"));
    assertTrue(set.contains("b"));
  }

  public void testCopyOf_collectionContainingNull() {
    Collection<@Nullable String> c = MinimalCollection.of("a", null, "b");
    try {
      copyOf((Collection<String>) c);

  public void testCopyOf_collection_general() {
    Collection<String> c = MinimalCollection.of("a", "b", "a");
    Set<String> set = copyOf(c);
    assertEquals(2, set.size());
    assertTrue(set.contains("a"));
    assertTrue(set.contains("b"));
  }

  public void testCopyOf_collectionContainingNull() {
    Collection<@Nullable String> c = MinimalCollection.of("a", null, "b");
    try {
      copyOf((Collection<String>) c);

      return size() - index;
    }

    @Override
    public ImmutableList<E> reverse() {
      return forwardList;
    }

    @Override
    public boolean contains(@CheckForNull Object object) {
      return forwardList.contains(object);
    }

    @Override
    public int indexOf(@CheckForNull Object object) {
      int index = forwardList.lastIndexOf(object);

    assertTrue(entrySet.contains(Maps.immutableEntry(10, 'X')));
    assertTrue(entrySet.contains(Maps.immutableEntry(20, 'X')));
    assertFalse(entrySet.contains(Maps.immutableEntry(15, 'X')));
    entrySet = row.tailMap(15).entrySet();
    assertFalse(entrySet.contains(Maps.immutableEntry(10, 'X')));
    assertTrue(entrySet.contains(Maps.immutableEntry(20, 'X')));