return false;
    }

    private TokenStream createTokenStream(final Reader rd) {
        return null;
        /*
         * TODO if (tokenizerFactory instanceof JapaneseTokenizerFactory) { return tokenizerFactory.create(); } else {
         * return null; }
         */
    }

    /**
     * Gets the reading from the attribute.
     * @param stream The token stream.

  public void testSetNull() throws Exception {
    future.set(null);
    assertSuccessful(future, null);
  }

  @SuppressWarnings("nullness") // test of a bogus call
  public void testSetExceptionNull() throws Exception {
    assertThrows(NullPointerException.class, () -> future.setException(null));

    assertThat(future.isDone()).isFalse();
    assertThat(future.set(1)).isTrue();

     * @param name The parameter name.
     * @return The parameter value, or null if not found.
     */
    public String getParameter(final String name) {
        return parameterMap.get(name);
    }

    @Override
    public String getRealm() {
        return null;
    }

    @Override
    public boolean isConnectionBased() {
        return false;
    }

 * @author higa
 * @param <E> the element type
 */
public class SLinkedList<E> implements Cloneable, Externalizable {

    static final long serialVersionUID = 1L;

    private transient Entry header = new Entry(null, null, null);

    private transient int size = 0;

    /**
     * Creates an {@link SLinkedList}.
     */
    public SLinkedList() {
        header.next = header;
        header.previous = header;
    }

  body: ByteString?,
  connectionIndex: Int,
  exchangeIndex: Int,
  socket: MockWebServerSocket,
  failure: IOException? = null,
): RecordedRequest {
  val requestUrl =
    when (requestLine.method) {
      "CONNECT" -> "${socket.scheme}://${requestLine.target}/".toHttpUrlOrNull()
      else -> null
    }
      ?: requestLine.target.toHttpUrlOrNull()
      ?: requestUrl(socket, requestLine, headers)

  return RecordedRequest(

    val mainMethod =
      Class
        .forName(className)
        .methods
        .find { it.name == "main" }
    try {
      if (mainMethod != null) {
        if (mainMethod.parameters.isEmpty()) {
          mainMethod.invoke(null)
        } else {
          mainMethod.invoke(null, arrayOf<String>())
        }
      } else {
        System.err.println("No main for $className")
      }

    for (entry in list) {
      var failure: Throwable? = null
      try {
        testToAscii(entry.input!!, entry.output, entry.comment)
      } catch (e: Throwable) {
        failure = e
      }

      if (entry.input in knownFailures) {
        if (failure == null) failures += AssertionError("known failure didn't fail: $entry")
      } else {
        if (failure != null) failures += failure
      }
    }

  }

  public void testToOptionalSingleton() {
    assertThat(Stream.of(1).collect(toOptional())).hasValue(1);
  }

  public void testToOptionalNull() {
    Stream<@Nullable Object> stream = Stream.of((Object) null);
    assertThrows(NullPointerException.class, () -> stream.collect(toOptional()));
  }

  public void testToOptionalMultiple() {
    IllegalArgumentException expected =

    }

    @Test
    @DisplayName("DOS_ERROR_CODES is non‑null and non‑empty")
    void testCodesArrayExistence() {
        assertNotNull(DosError.DOS_ERROR_CODES, "DOS_ERROR_CODES should be non‑null");
        assertTrue(DosError.DOS_ERROR_CODES.length > 0, "DOS_ERROR_CODES should contain at least one mapping");
    }

    @Test

    /**
     * Gets the policy that applies to this metadata regarding the specified repository.
     *
     * @param repository The repository for which to determine the policy, must not be {@code null}.
     * @return The policy, never {@code null}.
     */
    ArtifactRepositoryPolicy getPolicy(ArtifactRepository repository);