void testRapidCalls() {
        Instant[] instants = new Instant[1000];
        for (int i = 0; i < instants.length; i++) {
            instants[i] = MonotonicClock.now();
        }

        // Verify monotonic behavior across all measurements
        for (int i = 1; i < instants.length; i++) {
            assertTrue(
                    instants[i].compareTo(instants[i - 1]) >= 0,

        return CLOCK;
    }

    /**
     * Returns the current instant from the monotonic clock.
     * This is a convenience method equivalent to {@code get().instant()}.
     *
     * @return the current instant using monotonic timing
     */
    public static Instant now() {
        return get().instant();
    }

    /**
     * Returns the initialization time of this monotonic clock.

     */
    @Nonnull
    Map<String, String> getEffectiveProperties();

    /**
     * Returns the start time of the session.
     *
     * @return the start time as an Instant object, never {@code null}
     */
    @Nonnull
    Instant getStartTime();

    /**
     * Gets the directory of the topmost project being built, usually the current directory or the

    @Override
    protected LocalDateTime toLocalDateTime(final Object value) {
        if (value != null) {
            try {
                final Instant instant = Instant.from(DateTimeFormatter.ISO_INSTANT.parse(value.toString()));
                return LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
            } catch (final DateTimeParseException e) {
                logger.debug("Invalid date format: {}", value, e);
            }

    @Override
    protected LocalDateTime toLocalDateTime(final Object value) {
        if (value != null) {
            try {
                final Instant instant = Instant.from(DateTimeFormatter.ISO_INSTANT.parse(value.toString()));
                return LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
            } catch (final DateTimeParseException e) {
                logger.debug("Invalid date format: {}", value, e);
            }

        private volatile Instant lastAttempt = Instant.now();
        private volatile Instant windowStart = Instant.now();
        private volatile Instant blockExpiry = null;
        private final AtomicBoolean blocked = new AtomicBoolean(false);

        void recordAttempt() {
            Instant now = Instant.now();

            // Reset window if more than 1 minute has passed

  }

  @Test fun setInstant() {
    val expected = Instant.ofEpochMilli(1000L)
    val headers =
      Headers
        .Builder()
        .add("Test-Instant", Instant.ofEpochMilli(0L))
        .set("Test-Instant", expected)
        .build()
    assertThat(headers["Test-Instant"]).isEqualTo("Thu, 01 Jan 1970 00:00:01 GMT")
    assertThat(headers.getInstant("Test-Instant")).isEqualTo(expected)
  }

  @Test fun addParsing() {

    @Override
    protected LocalDateTime toLocalDateTime(final Object value) {
        if (value != null) {
            try {
                final Instant instant = Instant.from(DateTimeFormatter.ISO_INSTANT.parse(value.toString()));
                return LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
            } catch (final DateTimeParseException e) {
                logger.debug("Invalid date format: {}", value, e);
            }

    ) = add(name, value.toHttpDateString())

    /**
     * Add a header with the specified name and formatted instant. Does validation of header names
     * and value.
     */
    @IgnoreJRERequirement // Only programs that already have Instant will use this.
    fun add(
      name: String,
      value: Instant,
    ) = add(name, Date.from(value))

    /**

    @Override
    protected LocalDateTime toLocalDateTime(final Object value) {
        if (value != null) {
            try {
                final Instant instant = Instant.from(DateTimeFormatter.ISO_INSTANT.parse(value.toString()));
                return LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
            } catch (final DateTimeParseException e) {
                logger.debug("Invalid date format: {}", value, e);
            }