// notifications for all of them.
    for (int i = 0; i < nSeededEntries; i++) {
      assertEquals("b" + i, removalNotifications.get("b" + i));
    }

    // Each of the values added to the map should either still be there, or have seen a removal
    // notification.
    assertEquals(expectedKeys, Sets.union(cache.asMap().keySet(), removalNotifications.keySet()));

        Kerb5Authenticator auth = new Kerb5Authenticator(new Subject(), "DOM", "user", "pass");
        auth.setForceFallback(true);

        // Token advertising Kerberos mech (so foundKerberos == true), but forceFallback should still route to NTLM
        byte[] init = spnegoInitWithMechs(Kerb5Context.SUPPORTED_MECHS);

        // NtlmPasswordAuthenticator#createContext will inspect mechs and throw because NTLM is not advertised

   *         .put(BarHandler.class, new SubBarHandler())
   *         .put(Handler.class, new QuuxHandler())
   *         .build();
   * }
   *
   * <p>After invoking {@link #build()} it is still possible to add more entries and build again.
   * Thus each map generated by this builder will be a superset of any map generated before it.
   *
   * @since 2.0
   */
  public static final class Builder<B> {

    @Override
    public Set<K> keySet() {
      /*
       * We can't use StandardKeySet, as NavigableMapTestSuiteBuilder assumes that our keySet is a
       * NavigableSet. We test StandardKeySet in the superclass, so it's still covered.
       */
      return navigableKeySet();
    }

    @Override
    public Collection<V> values() {
      return new StandardValues();
    }

    @Override

 * that every {@code Runnable} that is {@linkplain #add added} will be executed after {@link
 * #execute()} is called. Any {@code Runnable} added after the call to {@code execute} is still
 * guaranteed to execute. There is no guarantee, however, that listeners will be executed in the
 * order that they are added.
 *
 * <p>Exceptions thrown by a listener will be propagated up to the executor. Any exception thrown

        PrefixQuery prefixQuery = new PrefixQuery(new Term("title", ""));

        QueryBuilder builder = queryProcessor.execute(context, prefixQuery, 1.0f);

        assertNotNull(builder);
        // Empty prefix should still create a valid query
        assertTrue(builder instanceof MatchPhrasePrefixQueryBuilder);

        MatchPhrasePrefixQueryBuilder mpqb = (MatchPhrasePrefixQueryBuilder) builder;
        assertEquals("", mpqb.value());

        DirectoryCacheEntry entry = directoryCache.get(directoryPath);

        // Check if cache entry is valid
        if (entry != null && entry.needsRefresh()) {
            // Check if lease is still valid
            LeaseManager.LeaseEntry leaseEntry = baseLeaseManager.getLease(entry.getLeaseKey());
            if (leaseEntry == null || !leaseEntry.hasReadCache()) {
                // Lease lost, remove cache entry

      if (activeTask == null && futureTasks.isEmpty()) {
        return CountDownLatch(0)
      }

      // If there's an existing AwaitIdleTask, use it. This is necessary when the executor is
      // shutdown but still busy as we can't enqueue in that case.
      val existingTask = activeTask
      if (existingTask is AwaitIdleTask) {
        return existingTask.latch
      }
      for (futureTask in futureTasks) {

        differences between them.


        Additionally, it's very useful to us if you can provide a "straw API" — what the
        method signatures would look like, for example, even if the method and class names are still
        in flux. This can make the feature you're suggesting much clearer to us.

  - type: textarea
    attributes:
      label: (Optional) What would the method signatures for your feature look like?
      placeholder: |

       * timeoutFuture can be set (and delegate cancelled) only once. (And "set only once" is
       * important for other reasons: run() can still be invoked concurrently in different threads,
       * even with the above null checks.)
       */
      timeoutFutureRef = null;
      if (delegate.isDone()) {
        timeoutFuture.setFuture(delegate);