return inputSet.keySet().containsAll(set);
      }
      return false;
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof PowerSet) {
        PowerSet<?> that = (PowerSet<?>) obj;
        return inputSet.keySet().equals(that.inputSet.keySet());
      }
      return super.equals(obj);
    }

    @Override
    public int hashCode() {
      /*

  public void testContainsAll() {
    ImmutableSortedSet<Integer> set = ContiguousSet.create(Range.closed(1, 3), integers());
    for (Set<Integer> subset : Sets.powerSet(ImmutableSet.of(1, 2, 3))) {
      assertTrue(set.containsAll(subset));
    }
    for (Set<Integer> subset : Sets.powerSet(ImmutableSet.of(1, 2, 3))) {
      assertFalse(set.containsAll(Sets.union(subset, ImmutableSet.of(9))));
    }
  }

  public void testContainsAll() {
    ImmutableSortedSet<Integer> set = ContiguousSet.create(Range.closed(1, 3), integers());
    for (Set<Integer> subset : Sets.powerSet(ImmutableSet.of(1, 2, 3))) {
      assertTrue(set.containsAll(subset));
    }
    for (Set<Integer> subset : Sets.powerSet(ImmutableSet.of(1, 2, 3))) {
      assertFalse(set.containsAll(Sets.union(subset, ImmutableSet.of(9))));
    }
  }

            Range.closed(4, 6),
            Range.closedOpen(1, 3),
            Range.openClosed(5, 7),
            Range.open(3, 4));
    subsets:
    for (Set<Range<Integer>> subset : Sets.powerSet(ranges)) {
      assertEquals(TreeRangeSet.create(subset), ImmutableRangeSet.unionOf(subset));

      RangeSet<Integer> mutable = TreeRangeSet.create();

- [Português (Brazilian Portuguese)](docs/pt-BR/README.md)
- [Français (French)](docs/fr/README.md)
- [Deutsch (German)](docs/de/README.md)
- [한국어 (Korean)](docs/ko/README.md)

## Powered By

* [Lasta Di](https://github.com/lastaflute/lasta-di "Lasta Di"): DI Container
* [LastaFlute](https://github.com/lastaflute/lastaflute "LastaFlute"): Web Framework

- [Español (Spanish)](../es/README.md)
- [Português (Brazilian Portuguese)](../pt-BR/README.md)
- [Français (French)](../fr/README.md)
- [Deutsch (German)](../de/README.md)
- [한국어 (Korean)](../ko/README.md)

## Powered By

* [Lasta Di](https://github.com/lastaflute/lasta-di "Lasta Di"): DIコンテナ
* [LastaFlute](https://github.com/lastaflute/lastaflute "LastaFlute"): Webフレームワーク

  /** The HTTP {@code X-Frame-Options} header field name. */
  public static final String X_FRAME_OPTIONS = "X-Frame-Options";

  /** The HTTP {@code X-Powered-By} header field name. */
  public static final String X_POWERED_BY = "X-Powered-By";

  /**
   * The HTTP <a href="http://tools.ietf.org/html/draft-evans-palmer-key-pinning">{@code
   * Public-Key-Pins}</a> header field name.
   *
   * @since 15.0

$nav-link-padding-y;\n  color: var(--#{$prefix}navbar-color);\n\n  a,\n  a:hover,\n  a:focus  {\n    color: var(--#{$prefix}navbar-active-color);\n  }\n}\n\n\n// Responsive navbar\n//\n// Custom styles for responsive collapsing and toggling of navbar contents.\n// Powered by the collapse Bootstrap JavaScript plugin.\n\n// When collapsed, prevent the toggleable navbar contents from appearing in\n// the default flexbox row orientation. Requires the use of `flex-wrap: wrap`\n// on the `.navbar` parent.\n.navbar-collapse...