return seekByKey(key, smearedHash(key)) != null;
  }

  /**
   * Returns {@code true} if this BiMap contains an entry whose value is equal to {@code value} (or,
   * equivalently, if this inverse view contains a key that is equal to {@code value}).
   *
   * <p>Due to the property that values in a BiMap are unique, this will tend to execute in
   * faster-than-linear time.
   *

Landroidx/core/app/ComponentActivity;
Landroidx/core/app/CoreComponentFactory$CompatWrapped;
Landroidx/core/app/CoreComponentFactory;
Landroidx/core/view/KeyEventDispatcher;
Landroidx/core/view/MenuHostHelper;
Landroidx/core/view/MenuProvider;
Landroidx/core/view/ViewCompat;
Landroidx/lifecycle/ClassesInfoCache$CallbackInfo;
Landroidx/lifecycle/ClassesInfoCache;
Landroidx/lifecycle/CompositeGeneratedAdaptersObserver;

Não importa se ela contém outros caracteres como `:` ou se ela é uma URL.

Estes detalhes são específicos da implementação.

Para o OAuth2, eles são apenas strings.

///

## Visão global { #global-view }

Primeiro, vamos olhar rapidamente as partes que mudam dos exemplos do **Tutorial - Guia de Usuário** para [OAuth2 com Senha (e hash), Bearer com tokens JWT](../../tutorial/security/oauth2-jwt.md). Agora utilizando escopos OAuth2:

No importa si tiene otros caracteres como `:` o si es una URL.

Esos detalles son específicos de la implementación.

Para OAuth2 son solo strings.

///

## Vista global { #global-view }

    //

    /**
     * Displays the general settings index page.
     *
     * @return HTML response for the general settings page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        saveToken();
        return asHtml(path_AdminGeneral_AdminGeneralJsp).useForm(EditForm.class, setup -> {
            setup.setup(form -> {

    // the keySet() of the delegate is only a Set and TreeMap.navigatableKeySet
    // is not available in GWT yet.  To keep the code simple and code size more,
    // we make a copy here, instead of creating a view of it.
    //
    // TODO: revisit if it's unbearably slow or when GWT supports
    // TreeMap.navigatbleKeySet().
    return ImmutableSortedSet.copyOf(comparator, sortedDelegate.keySet());
  }

  @Override

  /**
   * Returns an immutable multimap containing the same mappings as {@code multimap}. The generated
   * multimap's key and value orderings correspond to the iteration ordering of the {@code
   * multimap.asMap()} view.
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are

    protected transient Entry<K, V>[] mapTable;

    /** Entry as an array */
    protected transient Entry<K, V>[] listTable;

    /** Number of elements */
    protected transient int size = 0;

    /** View as a {@link Set} */
    protected transient Set<? extends Map.Entry<K, V>> entrySet = null;

    /**
     * Constructs an instance with the default initial capacity.
     */
    public ArrayMap() {

    /* No aliasing on inverse operations. */
    assertThat(unmod.inverse()).isSameInstanceAs(unmod.inverse());
    assertThat(unmod.inverse().inverse()).isSameInstanceAs(unmod);

    /* Unmodifiable is a view. */
    mod.put(4, "four");
    assertEquals(true, unmod.get(4).equals("four"));
    assertEquals(true, unmod.inverse().get("four").equals(4));

    /* UnsupportedOperationException on direct modifications. */

 *           }
 *         });
 * }
 *
 * <p>The returned cache implements all optional operations of the {@link LoadingCache} and {@link
 * Cache} interfaces. The {@code asMap} view (and its collection views) have <i>weakly consistent
 * iterators</i>. This means that they are safe for concurrent use, but if other threads modify the