private @Nullable Set<Throwable> seenExceptions = null;
  private int remaining;

  AggregateFutureState(int remainingFutures) {
    this.remaining = remainingFutures;
  }

  final Set<Throwable> getOrInitSeenExceptions() {
    if (seenExceptions == null) {
      seenExceptions = newHashSet();
      addInitialException(seenExceptions);
    }

        // Test the no-argument constructor
        ConnectionTimeoutException exception = new ConnectionTimeoutException();
        assertNull(exception.getMessage(), "Message should be null for no-arg constructor");
        assertNull(exception.getCause(), "Cause should be null for no-arg constructor");
    }

    @Test
    void testStringConstructor() {
        // Test the constructor with a message
        String message = "Connection timed out.";

        }
      }.build()

  class Builder {
    internal var client: OkHttpClient? = null
    internal var url: HttpUrl? = null
    internal var includeIPv6 = true
    internal var post = false
    internal var systemDns = Dns.SYSTEM
    internal var bootstrapDnsHosts: List<InetAddress>? = null
    internal var resolvePrivateAddresses = false
    internal var resolvePublicAddresses = true

            @Nonnull Session session, @Nonnull ArtifactCoordinates coordinates) {
        return builder()
                .session(requireNonNull(session, "session cannot be null"))
                .groupId(requireNonNull(coordinates, "coordinates cannot be null")
                        .getGroupId())
                .artifactId(coordinates.getArtifactId())
                .version(coordinates.getVersionConstraint().toString())

        existPrePage = false;
        existNextPage = false;
        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        roles = null;
        groups = null;
        versionNo = null;

    }

    /**
     * Gets the default current page number.
     *
     * @return the default current page number
     */

    }

    @Test
    void constructorRejectsNull() {
        // Expect constructor to throw IllegalArgumentException when passed null
        assertThrows(IllegalArgumentException.class, () -> new UniAddress(null));
    }

    /* ---------------------------------------------------------------------
     * 2. Value based tests for instance methods

        }
    }

    @Test
    void testConstructor_NullServer() throws IOException {
        // Test case: Constructor with null server, should default to "\\\\"
        String server = null;
        int access = 123;

        doNothing().when(mockHandle).sendrecv(any(MsrpcSamrConnect4.class));

        if (StringUtil.isEmpty(filename) && is == null) {
            throw new MimeTypeException("The filename and input stream is empty.");
        }

        final Metadata metadata = new Metadata();
        metadata.add(ExtractData.RESOURCE_NAME_KEY, normalizeFilename(filename));

        try {
            if (useFilename) {
                final MediaType mediaType = mimeTypes.detect(null, metadata);

  /**
   * A word about using {@link Equivalence}, which automatically checks for {@code null} and
   * identical inputs: This sounds like it ought to be a problem here, since the goals of this class
   * include testing that {@code equals()} is reflexive and is tolerant of {@code null}. However,
   * there's no problem. The reason: {@link EqualsTester} tests {@code null} and identical inputs

     *            The string. Must not be {@literal null}.
     */
    public Tokenizer(final String str) {
        this(str, defaultCtype);
    }

    /**
     * Creates a {@link Tokenizer}.
     *
     * @param str
     *            The string. Must not be {@literal null}.
     * @param ctype
     *            The array of character types. Must not be {@literal null} or empty.
     */