* If [nextPlan] is not-null, another attempt should be made by following it. If [throwable] is
   * non-null, it should be reported to the user should all further attempts fail.
   *
   * The two values are independent: results can contain both (recoverable error), neither
   * (success), just an exception (permanent failure), or just a plan (non-exceptional retry).
   */
  data class ConnectResult(
    val plan: Plan,

     * use `get(key) ?: defaultValue` instead of this method, anyway.
     */
    V result = get(key);
    // TODO(b/192579700): Use a ternary once it no longer confuses our nullness checker.
    if (result != null) {
      return result;
    } else {
      return defaultValue;
    }
  }

  @LazyInit @RetainedWith private transient @Nullable ImmutableSet<Entry<K, V>> entrySet;

  /**

   */
  private void handleException(Throwable throwable) {
    checkNotNull(throwable);

    if (allMustSucceed) {
      // As soon as the first one fails, make that failure the result of the output future.
      // The results of all other inputs are then ignored (except for logging any failures).
      boolean completedWithFailure = setException(throwable);
      if (!completedWithFailure) {

      if (result == null) {
        entries = result = unmodifiableEntries(delegate.entries());
      }
      return result;
    }

    @Override
    public Collection<V> get(@ParametricNullness K key) {
      return unmodifiableValueCollection(delegate.get(key));
    }

    @Override
    public Multiset<K> keys() {
      Multiset<K> result = keys;
      if (result == null) {

    @Override
    public Multiset<K> keys() {
      Multiset<K> result = keys;
      if (result == null) {
        keys = result = Multisets.unmodifiableMultiset(delegate.keys());
      }
      return result;
    }

    @Override
    public Set<K> keySet() {
      Set<K> result = keySet;
      if (result == null) {
        keySet = result = Collections.unmodifiableSet(delegate.keySet());
      }

editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship.

"Modified Works" shall mean any work in Source Code or other form that
results from an addition to, deletion from, or modification of the
contents of the Program, including, for purposes of clarity any new file
in Source Code form that contains any contents of the Program. Modified

        String result = notificationHelper.toSlackMessage(discloser);

        assertNotNull(result);
        assertTrue(result.contains("Test"));
        assertTrue(result.contains("Subject"));
        assertTrue(result.contains("quotes"));
        assertTrue(result.contains("content"));
        assertTrue(result.contains("newlines"));
        assertTrue(result.contains("tabs"));

        });
    }

    /**
     * Searches key matches based on the form criteria.
     *
     * @param form the search form
     * @return HTML response for the search results
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse search(final SearchForm form) {
        copyBeanToBean(form, keyMatchPager, op -> op.exclude(Constants.PAGER_CONVERSION_RULE));

        assertNotNull(result);
        assertTrue(result.isPresent());
        assertEquals(testValue, result.get());
        assertEquals(0, result.get().size());
    }

    public void test_ofNullable_withNullList() {
        List<String> testValue = null;
        OptionalEntity<List<String>> result = OptionalUtil.ofNullable(testValue);

        assertNotNull(result);

  result.status(status)
  result.headers(headers)
  result.trailers(trailers)

  when (socketPolicy) {
    SocketPolicy.EXPECT_CONTINUE, SocketPolicy.CONTINUE_ALWAYS -> result.add100Continue()
    SocketPolicy.UPGRADE_TO_SSL_AT_END -> result.inTunnel()
    SocketPolicy.SHUTDOWN_SERVER_AFTER_RESPONSE -> result.shutdownServer(true)
    SocketPolicy.KEEP_OPEN -> Unit
    SocketPolicy.DISCONNECT_AT_END -> result.onResponseEnd(ShutdownConnection)