this.size = sizeInfo.getSize();
                        this.sizeExpiration = currentTime + cacheTimeout;
                        log.trace("Retrieved size info in additional query: {}", this.size);
                    }
                } catch (CIFSException e) {
                    // Size query failed, but we have basic info - continue

 */
final class SingletonImmutableSet<E> extends ImmutableSet<E> {
  private final E element;

  SingletonImmutableSet(E element) {
    this.element = checkNotNull(element);
  }

  @Override
  public int size() {
    return 1;
  }

  @Override
  public UnmodifiableIterator<E> iterator() {
    return Iterators.singletonIterator(element);
  }

  @Override
  public boolean contains(@Nullable Object object) {

        final ChatSource source = new ChatSource();
        source.setIndex(1);
        source.setTitle("Test Document");

        message.addSource(source);

        assertEquals(1, message.getSources().size());
        assertEquals("Test Document", message.getSources().get(0).getTitle());
    }

    @Test
    public void test_addSourceWithNullSources() {
        final ChatMessage message = new ChatMessage();

    for (V element : elements) {
      assertFalse("Should not contain value " + element, getMap().containsValue(element));
    }
  }

  /**
   * @return an array of the proper size with {@code null} as the key of the middle element.
   */
  protected Entry<K, V>[] createArrayWithNullKey() {
    Entry<K, V>[] array = createSamplesArray();
    int nullKeyLocation = getNullLocation();

    public Iterator<T> iterator() {
      return standardIterator();
    }

    @Override
    public boolean isEmpty() {
      return standardIsEmpty();
    }

    @Override
    public int size() {
      return standardSize();
    }
  }

  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();

        List<KerberosAuthData> authorizations = relevantAuthData.getAuthorizations();
        assertNotNull(authorizations, "The authorizations list should not be null.");
        assertEquals(1, authorizations.size(), "The authorizations list should contain one element.");
        assertEquals(mockAuthData, authorizations.get(0), "The authorization element should be the mocked object.");
    }

    /**

            assertEquals(1000000L, basicInfo.getCreateTime());
            assertEquals(2000000L, basicInfo.getLastWriteTime());
            assertEquals(0L, basicInfo.getSize()); // Basic info always returns 0 for size
        }

        @Test
        @DisplayName("Should generate correct toString for basic info")
        void testBasicInfoToString() {

        location.setLocation(0, location);

        List<LifecycleMojo> mojos = goals.getMojos();
        if (mojos != null) {

            for (int i = 0; i < mojos.size(); i++) {
                LifecycleMojo mojo = mojos.get(i);

                GoalSpec gs = parseGoalSpec(mojo.getGoal());

                if (gs == null) {
                    logger.warn(

  TF_AttrType type;

  // Total size the attribute value.
  // The units of total_size depend on is_list and type.
  // (1) If type == TF_ATTR_STRING and is_list == 0
  //     then total_size is the byte size of the string
  //     valued attribute.
  // (2) If type == TF_ATTR_STRING and is_list == 1
  //     then total_size is the cumulative byte size
  //     of all the strings in the list.

        return queryBuilderList != null && !queryBuilderList.isEmpty();
    }

    public QueryBuilder getQuery() {
        if (queryBuilderList == null) {
            return null;
        } else if (queryBuilderList.size() == 1) {
            return queryBuilderList.get(0);
        }
        BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
        queryBuilderList.forEach(query -> {
            boolQuery.must(query);