* @throws IllegalArgumentException if {@code k} is negative
   * @since 8.0
   */
  public <E extends T> List<E> greatestOf(Iterable<E> iterable, int k) {
    // TODO(kevinb): see if delegation is hurting performance noticeably
    // TODO(kevinb): if we change this implementation, add full unit tests.
    return this.<E>reverse().leastOf(iterable, k);
  }

  /**

        if (ref == null || ref.get() == null) {
            fileCache.remove(path);
        }
    }

    /**
     * Shutdown the lease manager
     */
    public void shutdown() {
        log.info("Shutting down lease manager");

        // Stop cleanup executor
        if (cleanupExecutor != null) {
            cleanupExecutor.shutdown();
            try {

            // Then
            assertEquals(null, result);
            verify(transportPool).getChallenge(context, address);
        }

        @Test
        @DisplayName("Should handle exception when getting challenge")
        void testGetChallengeException() throws CIFSException {
            // Given
            when(transportPool.getChallenge(context, address)).thenThrow(new CIFSException("Failed to get challenge"));

   * our class loader (which could be that of a dynamically loaded web application or OSGi bundle),
   * it would prevent our class loader from getting garbage collected.
   */
  static class DecoupledLoader implements FinalizerLoader {
    private static final String LOADING_ERROR =

                    try {
                        this.channelManager.shutdown();
                        this.channelManager = null;
                    } catch (Exception e) {
                        log.debug("Error shutting down channel manager during emergency cleanup", e);
                    }
                }

                if (this.witnessClient != null) {
                    try {

          }
        }

        // SETTINGS_MAX_HEADER_LIST_SIZE
        6 -> { // Advisory only, so ignored.
        }

        // Must ignore setting with unknown id.
        else -> {
        }
      }
      settings[id] = value
    }
    handler.settings(false, settings)
  }

  @Throws(IOException::class)
  private fun readPushPromise(

   * #MANY_VALUES_MEAN} and the sum-of-squares-of-deltas is {@link
   * #MANY_VALUES_SUM_OF_SQUARES_OF_DELTAS}. The smallest and largest finite values are always
   * {@link #MANY_VALUES_MIN} and {@link #MANY_VALUES_MAX}, although setting non-finite values will
   * change the true min and max.
   */
  static class ManyValues {

    private final ImmutableList<Double> values;

    ManyValues(double[] values) {

  }

  @GwtIncompatible // TODO
  private static BigInteger sqrtFloor(BigInteger x) {
    /*
     * Adapted from Hacker's Delight, Figure 11-1.
     *
     * Using DoubleUtils.bigToDouble, getting a double approximation of x is extremely fast, and
     * then we can get a double approximation of the square root. Then, we iteratively improve this

     * If null, all available data configurations will be crawled (when no other config IDs are specified).
     */
    protected String[] dataConfigIds;

    /**
     * Document expiration setting in days.
     * -2: use system default, -1: never expire, 0 or positive: expire after specified days.
     */
    protected int documentExpires = -2;

    /**
     * Hot thread monitoring interval in seconds.

    assertThrows(RejectedExecutionException.class, () -> executor.submit(() -> {}));
    assertTrue(executor.isTerminated());

    otherTask.get();
  }

  /**
   * Test for a bug where threads weren't getting signaled when shutdown was called, only when tasks
   * completed.
   */
  public void testDirectExecutorService_awaitTermination_missedSignal() {
    ExecutorService service = newDirectExecutorService();