assertEquals("0.0.0.0", unknownName.getName(), "Unknown name should be 0.0.0.0");
    }

    @Test
    @DisplayName("Should handle null hostname in getByName")
    void testGetByNameWithNull() {
        // When/Then
        assertThrows(UnknownHostException.class, () -> {
            nameServiceClient.getByName(null);

        assertNotNull(indexer.setRoleFieldName("role"));
        assertNotNull(indexer.setReadingConverter(null));
        assertNotNull(indexer.setNormalizer(null));
        assertNotNull(indexer.setAnalyzer(null));
        assertNotNull(indexer.setContentsParser(null));
        assertNotNull(indexer.setSuggestWriter(null));
    }

    @Test
    public void test_indexBadWordItem() throws Exception {

    protected String queryString;

    /** Set of query terms that should be highlighted in search results. */
    protected Set<String> highlightedQuerySet = null;

    /** Map storing field names and their associated query terms for logging. */
    protected Map<String, List<String>> fieldLogMap = null;

    /** Flag indicating whether role-based query filtering should be disabled. */
    protected boolean disableRoleQuery = false;

        if (CACHE_POLICY == 0) {
            return null;
        }
        synchronized (ADDRESS_CACHE) {
            CacheEntry entry = (CacheEntry) ADDRESS_CACHE.get(hostName);
            if (entry != null && entry.expiration < System.currentTimeMillis() && entry.expiration >= 0) {
                entry = null;
            }
            return entry != null ? entry.address : null;
        }
    }

        } else if (exception instanceof NullPointerException) {
            // Empty input causes null ASN1 object, which is expected behavior
            assertTrue(exception.getMessage() == null || exception.getMessage().contains("Cannot invoke \"Object.getClass()\""),
                    "NullPointerException should be from null ASN1 object.");
        }
    }

    /**

 * <pre>{@code
 * // Find child element
 * Element child = parent.child("version").orElse(null);
 *
 * // Check if child exists
 * boolean hasVersion = parent.child("version").isPresent();
 *
 * // Get child text content
 * String version = parent.child("version")
 *     .map(Element::textContent)
 *     .orElse(null);
 *
 * // Get trimmed text content
 * String trimmedVersion = parent.child("version")

        if (createdBy != null) {
            addFieldToSource(sourceMap, "createdBy", createdBy);
        }
        if (createdTime != null) {
            addFieldToSource(sourceMap, "createdTime", createdTime);
        }
        if (name != null) {
            addFieldToSource(sourceMap, "name", name);
        }
        if (sortOrder != null) {
            addFieldToSource(sourceMap, "sortOrder", sortOrder);

    // Populate the results list with null initially.
    for (int i = 0; i < futures.size(); ++i) {
      values.add(null);
    }

    this.values = values;
  }

  @Override
  final void collectOneValue(int index, @ParametricNullness V returnValue) {
    @RetainedLocalRef List<@Nullable Present<V>> localValues = values;
    if (localValues != null) {
      localValues.set(index, new Present<>(returnValue));

        }
    }

    @Test
    void handlesAbsentTransferSource() throws InterruptedException, TransferCancelledException {
        TransferResource resource = new TransferResource(null, null, "http://maven.org/test/test-resource", null, null);

        RepositorySystemSession session = Mockito.mock(RepositorySystemSession.class);
        TransferListener delegate = Mockito.mock(TransferListener.class);

     * has a current project, its plugin repositories will be used as well.
     *
     * @param plugin The plugin for which to resolve a version, must not be {@code null}.
     * @param session The Maven session to use, must not be {@code null}.
     */
    public DefaultPluginVersionRequest(Plugin plugin, MavenSession session) {
        setGroupId(plugin.getGroupId());
        setArtifactId(plugin.getArtifactId());