assertTrue(limiter.tryAcquire(0, SECONDS));
    assertFalse(limiter.tryAcquire(0, SECONDS));
    assertFalse(limiter.tryAcquire(0, SECONDS));
    stopwatch.sleepMillis(100);
    assertFalse(limiter.tryAcquire(0, SECONDS));
  }

  public void testTryAcquire_someWaitAllowed() {
    RateLimiter limiter = RateLimiter.create(5.0, stopwatch);
    assertTrue(limiter.tryAcquire(0, SECONDS));

        
        // Load persisted handles on startup
        loadPersistedHandles();
        
        // Schedule periodic persistence
        scheduler.scheduleAtFixedRate(this::persistHandles, 30, 30, TimeUnit.SECONDS);
    }
    
    public static class HandleInfo implements Serializable {
        private static final long serialVersionUID = 1L;
        
        private final String path;

    var throttleBytesPerPeriod: Long = mockResponse.throttleBytesPerPeriod
    throttleBytesPerPeriod = mockResponse.throttleBytesPerPeriod
    var throttlePeriod: Long = mockResponse.getThrottlePeriod(TimeUnit.SECONDS)
    mockResponse = mockResponse.setBodyDelay(0L, TimeUnit.SECONDS)
    val bodyDelay: Long = mockResponse.getBodyDelay(TimeUnit.SECONDS)

    runLatch.await();
    taskLatch.countDown();

    ExecutionException e = assertThrows(ExecutionException.class, () -> task.get(5, SECONDS));
    assertThat(e).hasCauseThat().isInstanceOf(IllegalStateException.class);

    assertTrue(listenerLatch.await(5, SECONDS));
    assertTrue(task.isDone());
    assertFalse(task.isCancelled());
  }

        localhostIpv6,
      )

    client =
      clientTestRule
        .newClientBuilder()
        .eventListenerFactory(clientTestRule.wrap(eventRecorder))
        .connectTimeout(60, TimeUnit.SECONDS) // Deliberately exacerbate slow fallbacks.
        .dns { dnsResults }
        .fastFallback(true)
        .build()
    url =
      serverIpv4
        .url("/")
        .newBuilder()

    }

    /**
     * Returns the second value.
     *
     * @return The second value
     */
    public T2 getSecond() {
        return second;
    }

    /**
     * Sets the second value.
     *
     * @param second
     *            The second value
     */
    public void setSecond(final T2 second) {
        this.second = second;
    }

    @Override

   *
   * How this works is best explained with an example:
   *
   * For a RateLimiter that produces 1 token per second, every second that goes by with the
   * RateLimiter being unused, we increase storedPermits by 1. Say we leave the RateLimiter unused
   * for 10 seconds (i.e., we expected a request at time X, but we are at time X + 10 seconds before
   * a request actually arrives; this is also related to the point made in the last paragraph), thus

    assertTrue(latch.await(5, SECONDS));
    assertTrue(future.isDone());
    assertFalse(future.isCancelled());

    assertEquals(expectedValue, future.get());
  }

  public void testCancelledFuture() throws InterruptedException, ExecutionException {
    assertTrue(future.isDone());
    assertTrue(future.isCancelled());

    assertTrue(latch.await(5, SECONDS));
    assertTrue(future.isDone());

    CacheBuilderSpec spec = parse("expireAfterWrite=10s");
    assertThat(spec.writeExpirationTimeUnit).isEqualTo(SECONDS);
    assertThat(spec.writeExpirationDuration).isEqualTo(10L);
    assertCacheBuilderEquivalence(
        CacheBuilder.newBuilder().expireAfterWrite(10L, SECONDS), CacheBuilder.from(spec));
  }

  public void testParse_writeExpirationRepeated() {
    assertThrows(

        assertTrue(addresses.length > 0, "Should return at least one address");
    }

    @Test
    @DisplayName("Should handle NetBIOS name resolution with timeout")
    @Timeout(value = 2, unit = TimeUnit.SECONDS) // Force test timeout
    void testGetNbtByName() {
        // When/Then - Should throw UnknownHostException quickly due to short timeouts
        UnknownHostException exception = assertThrows(UnknownHostException.class, () -> {