for (Collection<V> valueCollection : multimap().asMap().values()) {
      assertTrue(valueCollection instanceof Set);
    }
  }

  public void testAsMapGetImplementsSet() {
    for (K key : multimap().keySet()) {
      assertTrue(multimap().asMap().get(key) instanceof Set);
    }
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testAsMapRemoveImplementsSet() {

    if (iterable instanceof Collection) {
      Collection<? extends T> c = (Collection<? extends T>) iterable;
      if (c.isEmpty()) {
        return defaultValue;
      } else if (iterable instanceof List) {
        return getLastInNonemptyList((List<? extends T>) iterable);
      } else if (iterable instanceof SortedSet) {
        return ((SortedSet<? extends T>) iterable).last();

        ServletRuntimeException runtimeException = new ServletRuntimeException(servletException);

        // Verify it's an instance of RuntimeException
        assertTrue(runtimeException instanceof RuntimeException);
        assertTrue(runtimeException instanceof Exception);
        assertTrue(runtimeException instanceof Throwable);
    }

    public void test_stackTrace() {
        // Create a ServletException with a specific message

      @ParametricNullness T instance) {
    return new SupplierOfInstance<>(instance);
  }

  private static final class SupplierOfInstance<T extends @Nullable Object>
      implements Supplier<T>, Serializable {
    @ParametricNullness final T instance;

    SupplierOfInstance(@ParametricNullness T instance) {
      this.instance = instance;
    }

    @Override
    @ParametricNullness
    public T get() {

    return MoreObjects.toStringHelper(ServiceManager.class)
        .add("services", Collections2.filter(services, not(instanceOf(NoOpService.class))))
        .toString();
  }

  /**
   * An encapsulation of all the mutable state of the {@link ServiceManager} that needs to be
   * accessed by instances of {@link ServiceListener}.
   */
  private static final class ServiceManagerState {

        JobNotFoundException exception = new JobNotFoundException("test");

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    public void test_serialization() {
        // Test that the exception has serialVersionUID defined

    assertTrue(multimap.keySet() instanceof SortedSet);
    assertTrue(multimap.asMap() instanceof SortedMap);
  }

  public void testTreeKeys_gwtCompatible() {
    ListMultimap<String, Integer> multimap =
        rawtypeToWildcard(MultimapBuilder.treeKeys()).arrayListValues().<String, Integer>build();
    assertTrue(multimap.keySet() instanceof SortedSet);
    assertTrue(multimap.asMap() instanceof SortedMap);

            }

            if (cb instanceof NameCallback nc) {
                String userDomain = this.getSpecifiedUserDomain();
                if (this.getUsername() != null && userDomain != null) {
                    nc.setName(this.getUsername() + "@" + userDomain);
                }
            } else if (cb instanceof PasswordCallback pc) {

        // Assert correct index was used
        assertEquals("fess.update", deleteIndex);

        // Assert query builder is correct
        assertNotNull(deleteQuery);
        assertTrue(deleteQuery instanceof RangeQueryBuilder);
        RangeQueryBuilder rangeQuery = (RangeQueryBuilder) deleteQuery;
        assertEquals("expires", rangeQuery.fieldName());
        assertEquals("now", rangeQuery.to());

   * the {@link Writer#nullWriter()} method returns a new instance whose methods throw after the
   * instance is {@link Writer#close() closed}.
   *
   * @since 15.0
   */
  public static Writer nullWriter() {
    return NullWriter.INSTANCE;
  }

  private static final class NullWriter extends Writer {

    private static final NullWriter INSTANCE = new NullWriter();

    @Override