assertTrue(multimap().containsValue(null));
  }

  @MapFeature.Require(ALLOWS_NULL_VALUE_QUERIES)
  public void testContainsNullValueNo() {
    assertFalse(multimap().containsValue(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_VALUE_QUERIES)
  public void testContainsNullValueFails() {
    assertThrows(NullPointerException.class, () -> multimap().containsValue(null));
  }

     * @return an {@link Iterable} wrapping a {@link ClassLoaderIterator}
     */
    public static Iterable<ClassLoader> iterable(final ClassLoader classLoader) {
        return () -> new ClassLoaderIterator(classLoader);
    }

    /**
     * Constructs an instance.
     *
     * @param classLoader the class loader (must not be {@literal null})
     */

     * @param locale
     *            The locale. Must not be {@literal null}.
     * @return The normalized string
     */
    public static String normalize(final String s, final Locale locale) {
        assertArgumentNotNull("locale", locale);

        if (s == null) {
            return null;
        }
        final DecimalFormatSymbols symbols = DecimalFormatSymbolsUtil.getDecimalFormatSymbols(locale);

     *
     * @param model The model to interpolate, must not be {@code null}.
     * @param projectDir The project directory, may be {@code null} if the model does not belong to a local project but
     *            to some artifact's metadata.
     * @param request The model building request that holds further settings, must not be {@code null}.

     * model building.
     *
     * @param request The model building request that holds the parameters, must not be {@code null}.
     * @param result The interim result of the first phase of model building, must not be {@code null}.
     * @return The result of the model building, never {@code null}.
     * @throws ModelBuildingException If the effective model could not be built.
     */

     * @param settings The settings to decrypt, must not be {@code null}.
     */
    public DefaultSettingsDecryptionRequest(Settings settings) {
        setServers(settings.getServers());
        setProxies(settings.getProxies());
    }

    /**
     * Creates a new request to decrypt the specified server.
     *
     * @param server The server to decrypt, must not be {@code null}.
     */

    }

    /**
     * Gets the type of the class realm.
     *
     * @return The type of the class realm, never {@code null}.
     */
    RealmType getType();

    /**
     * Gets the parent class realm (if any).
     *
     * @return The parent class realm or {@code null} if using the default parent.
     */
    ClassLoader getParent();

    /**
     * @deprecated Use {@link #getParentImports()} instead.

     * it returns a subclass of Joiner that overrides this method to tolerate null inputs.
     *
     * Unfortunately, we don't distinguish between these two cases in our public API: Joiner.on(...)
     * and Joiner.on(...).useForNull(...) both declare the same return type: plain Joiner. To ensure
     * that users *can* pass null arguments to Joiner, we annotate it as if it always tolerates null
     * inputs, rather than as if it never tolerates them.
     *

 *       collection. This is a stronger guarantee than that of {@link
 *       Collections#unmodifiableCollection}, whose contents change whenever the wrapped collection
 *       is modified.
 *   <li><b>Null-hostility.</b> This collection will never contain a null element.
 *   <li><b>Deterministic iteration.</b> The iteration order is always well-defined, depending on
 *       how the collection was created. Typically this is insertion order unless an explicit

            assertEquals("Named pipes are only valid on IPC$", ex.getMessage());
        }

        @Test
        @DisplayName("Null context throws NPE (invalid input)")
        void nullContextThrows() {
            assertThrows(NullPointerException.class, () -> new SmbNamedPipe("smb://server/IPC$/foo", 0, null));
        }

        @Test
        @DisplayName("Second constructor sets unshared based on flags")