return (Iterator<T>) EmptyModifiableIterator.INSTANCE;
  }

  /** Returns an unmodifiable view of {@code iterator}. */
  public static <T extends @Nullable Object> UnmodifiableIterator<T> unmodifiableIterator(
      Iterator<? extends T> iterator) {
    checkNotNull(iterator);
    if (iterator instanceof UnmodifiableIterator) {

                    return true;
                }

                @Override
                public boolean equals(Object obj) {
                    return obj instanceof AlwaysTrueFilter;
                }

                @Override
                public int hashCode() {
                    return AlwaysTrueFilter.class.hashCode();
                }

    }

    @CanIgnoreReturnValue
    @Override
    public Builder<E> addAll(Iterable<? extends E> elements) {
      if (elements instanceof Collection) {
        Collection<?> collection = (Collection<?>) elements;
        ensureRoomFor(collection.size());
        if (collection instanceof ImmutableCollection) {
          ImmutableCollection<?> immutableCollection = (ImmutableCollection<?>) collection;

     *
     * @param proxy the proxy
     * @return this CurlRequest instance
     */
    public CurlRequest proxy(final Proxy proxy) {
        this.proxy = proxy;
        return this;
    }

    /**
     * Sets the character encoding for the request.
     *
     * @param encoding the encoding
     * @return this CurlRequest instance
     * @throws CurlException if the method is called after the param method

            public List<RemoteRepository> getRepositories() {
                return repositories;
            }

            @Override
            public boolean equals(Object o) {
                return o instanceof DefaultProjectBuilderRequest that
                        && allowStubModel == that.allowStubModel
                        && recursive == that.recursive
                        && processPlugins == that.processPlugins

      inline.execute(command);
    }

    private static <T> void assertTaskWrapped(Collection<? extends Callable<T>> tasks) {
      Predicate<Object> p = Predicates.instanceOf(WrappedCallable.class);
      assertTrue(Iterables.all(tasks, p));
    }
  }

        executor.shutdown();

        // Then - No ConcurrentModificationException
        for (Exception e : exceptions) {
            assertFalse(e instanceof java.util.ConcurrentModificationException, "Should not have ConcurrentModificationException");
        }

        assertTrue(successCount.get() > 0, "Operations should succeed");
    }

                            public Optional<Path> getPath(org.apache.maven.api.Artifact artifact) {
                                Path path = paths.get(artifact.key());
                                if (path == null && artifact instanceof DefaultArtifact defaultArtifact) {
                                    path = defaultArtifact.getArtifact().getPath();
                                }
                                return Optional.ofNullable(path);

            Encdec.enc_uint32be(n & 0xFFFF, BUF, 0); /* 4 byte session message header */
            if (LogStream.level >= 4) {
                do {
                    log.println(smb);
                } while (smb instanceof AndXServerMessageBlock && (smb = ((AndXServerMessageBlock) smb).andx) != null);
                if (LogStream.level >= 6) {
                    Hexdump.hexdump(log, BUF, 4, n);
                }
            }

    public int compareTo(ClassWithTerribleHashCode that) {
      return Integer.compare(this.value, that.value);
    }

    @Override
    public boolean equals(@Nullable Object x) {
      return x instanceof ClassWithTerribleHashCode
          && ((ClassWithTerribleHashCode) x).value == value;
    }

    @Override
    public int hashCode() {
      return 23;
    }

    @Override