return new Iterator<Integer>() {
              @Override
              public void remove() {
                // Wrong exception type.
                throw new IllegalArgumentException();
              }

              @Override
              public Integer next() {
                // Wrong exception type.
                throw new UnsupportedOperationException();
              }

              @Override

    /** Property name for proxy authentication scheme setting */
    public static final String PROXY_AUTH_SCHEME_PROPERTY = "proxyAuthScheme";

    /** Property name for proxy credentials setting */
    public static final String PROXY_CREDENTIALS_PROPERTY = "proxyCredentials";

    /** Property name for user agent setting */
    public static final String USER_AGENT_PROPERTY = "userAgent";

   * the call to {@code contains(null)} is permitted to throw a {@code NullPointerException}.
   *
   * @param message message to use upon assertion failure
   */
  protected void expectNullKeyMissingWhenNullKeysUnsupported(String message) {
    try {
      assertFalse(message, getMap().containsKey(null));
    } catch (NullPointerException tolerated) {
      // Tolerated
    }
  }

  /**

		{"small-1", []int64{509}, make(map[string]string)},
		{"small-2", []int64{5 * oneMiB}, make(map[string]string)},
		// // // cases 5-8: multipart part objects
		{"mp-0", []int64{5 * oneMiB, 1}, make(map[string]string)},
		{"mp-1", []int64{5*oneMiB + 1, 1}, make(map[string]string)},
		{"mp-2", []int64{5487701, 5487799, 3}, make(map[string]string)},
		{"mp-3", []int64{10499807, 10499963, 7}, make(map[string]string)},

}

func (f *fileListEntry) Info() (fs.FileInfo, error) { return f, nil }

func (f *fileListEntry) String() string {
	return fs.FormatDirEntry(f)
}

// toValidName coerces name to be a valid name for fs.FS.Open.
func toValidName(name string) string {
	name = strings.ReplaceAll(name, `\`, `/`)
	p := path.Clean(name)

	p = strings.TrimPrefix(p, "/")

func removeStandardStorageClass(metadata map[string]string) map[string]string {
	if metadata[xhttp.AmzStorageClass] == storageclass.STANDARD {
		delete(metadata, xhttp.AmzStorageClass)
	}
	return metadata
}

// cleanMetadataKeys takes keyNames to be filtered
// and returns a new map with all the entries with keyNames removed.
func cleanMetadataKeys(metadata map[string]string, keyNames ...string) map[string]string {

   * the call to {@code contains(null)} is permitted to throw a {@code NullPointerException}.
   *
   * @param message message to use upon assertion failure
   */
  protected void expectNullKeyMissingWhenNullKeysUnsupported(String message) {
    try {
      assertFalse(message, getMap().containsKey(null));
    } catch (NullPointerException tolerated) {
      // Tolerated
    }
  }

  /**

   */
  @Throws(IOException::class)
  fun urls(): MutableIterator<String> {
    return object : MutableIterator<String> {
      private val delegate: MutableIterator<DiskLruCache.Snapshot> = cache.snapshots()
      private var nextUrl: String? = null
      private var canRemove = false

      override fun hasNext(): Boolean {
        if (nextUrl != null) return true

    NavigableMap<String, String> map = ImmutableSortedMap.of("a", "4", "b", "9");
    EntryTransformer<String, String, String> concat =
        new EntryTransformer<String, String, String>() {
          @Override
          public String transformEntry(String key, String value) {
            return key + value;
          }
        };
    NavigableMap<String, String> transformed = transformEntries(map, concat);

    val e = RuntimeException()
    clientListener.setNextEventDelegate(
      object : WebSocketListener() {
        override fun onMessage(
          webSocket: WebSocket,
          text: String,
        ): Unit = throw e
      },
    )
    server.send("Hello, WebSockets!")
    clientListener.assertFailure(e)
    serverListener.assertFailure(EOFException::class.java)