void testGetSupertype_typeVariableWithMultipleBounds() {
    assertEquals(
        Number.class, new TypeToken<T>(getClass()) {}.getSupertype(Number.class).getType());
    assertEquals(
        new TypeToken<Iterable<A>>() {},
        new TypeToken<T>(getClass()) {}.getSupertype(Iterable.class));
  }

  public void testGetSupertype_withoutTypeVariable() {
    ParameterizedType expectedType =

    static final ClassOwnership JVM_BEHAVIOR = detectJvmBehavior();

    private static ClassOwnership detectJvmBehavior() {
      class LocalClass<T> {}
      Class<?> subclass = new LocalClass<String>() {}.getClass();
      // requireNonNull is safe because we're examining a type that's known to have a superclass.
      ParameterizedType parameterizedType =
          requireNonNull((ParameterizedType) subclass.getGenericSuperclass());

      void testGetSupertype_typeVariableWithMultipleBounds() {
    assertEquals(
        Number.class, new TypeToken<T>(getClass()) {}.getSupertype(Number.class).getType());
    assertEquals(
        new TypeToken<Iterable<A>>() {},
        new TypeToken<T>(getClass()) {}.getSupertype(Iterable.class));
  }

  public void testGetSupertype_withoutTypeVariable() {
    ParameterizedType expectedType =

    static final ClassOwnership JVM_BEHAVIOR = detectJvmBehavior();

    private static ClassOwnership detectJvmBehavior() {
      class LocalClass<T> {}
      Class<?> subclass = new LocalClass<String>() {}.getClass();
      // requireNonNull is safe because we're examining a type that's known to have a superclass.
      ParameterizedType parameterizedType =
          requireNonNull((ParameterizedType) subclass.getGenericSuperclass());

            // Log the exception for debugging purposes but don't fail the test
            System.out.println("Expected exception in test environment: " + t.getClass().getSimpleName() + ": " + t.getMessage());

            // Verify that it's a system-related exception, not a method signature issue

// Java 21 Sequenced Collections support
SequencedCollection<String> sequenced = CollectionsUtil.newLinkedHashSet();
String first = CollectionsUtil.getFirst(sequenced);
String last = CollectionsUtil.getLast(sequenced);
SequencedCollection<String> reversed = CollectionsUtil.reversed(sequenced);

// Specialized collections
LruHashMap<String, Object> lruCache = new LruHashMap<>(100); // LRU cache with max 100 entries

     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        final Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
        cal.set(2027, 3 - 1, 1); // EOL Date
        eolTime = cal.getTimeInMillis();

     * Called automatically after dependency injection is complete.
     */
    @PostConstruct
    public void open() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        if (StringUtil.isNotBlank(fessConfig.getIndexDictionaryPrefix())) {