private static Object getField(Object target, String name) {
        try {
            Field f = findField(target.getClass(), name);
            f.setAccessible(true);
            return f.get(target);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    // Helper: find field in class hierarchy

        long lastModified = conn.getLastModified();
        assertEquals(lastModified, date);
    }

    /**
     * Helper method to get private field value using reflection.
     * Searches the class hierarchy to find the field.
     */
    private Object getField(Object obj, String fieldName) throws Exception {
        Class<?> clazz = obj.getClass();
        while (clazz != null) {
            try {

    }

    /**
     * Represents a crawl request containing a URL and its depth in the crawling hierarchy.
     * Used for managing recursive crawling operations.
     */
    private static class CrawlRequest {
        /** The URL to be crawled. */
        private final String url;
        /** The depth of this URL in the crawling hierarchy. */
        private final int depth;

        /**

    class SerializationTests {

        @Test
        @DisplayName("Should maintain exception hierarchy")
        void testExceptionHierarchy() {
            TransportException exception = new TransportException("Test");

            // Verify the exception hierarchy
            assertTrue(exception instanceof IOException);
            assertTrue(exception instanceof Exception);

        long lastModified = conn.getLastModified();
        assertEquals(lastModified, date);
    }

    /**
     * Helper method to get private field value using reflection.
     * Searches the class hierarchy to find the field.
     */
    private Object getField(Object obj, String fieldName) throws Exception {
        Class<?> clazz = obj.getClass();
        while (clazz != null) {
            try {

- `http/HcHttpClient.java`, `fs/FileSystemClient.java`, `storage/StorageClient.java`

**DI Config**: `fess-crawler-lasta/src/main/resources/crawler.xml`

### Exception Hierarchy

```
CrawlerSystemException (unchecked)  # Setup/config errors
CrawlingAccessException (checked)   # Runtime crawl errors
  ├─ MaxLengthExceededException
  └─ ChildUrlsException

            assertEquals("Message", exception.getMessage());
            assertNull(exception.getCause());
        });
    }

    @Test
    @DisplayName("Should preserve exception hierarchy")
    void testExceptionHierarchy() {
        // When
        RuntimeCIFSException exception = new RuntimeCIFSException("Test");

        // Then
        assertTrue(exception instanceof RuntimeException);

    /** Array of supported file protocols for URL classification. */
    protected String[] fileProtocols = { "file:", "smb:", "smb1:", "ftp:", "storage:" };

    /** Queue to track the current XML element hierarchy during parsing. */
    protected LinkedList<String> tagQueue;

    /** List to store parsed label types for access control. */
    protected List<LabelType> labelList;

    /**
     * Helper method to set error code using reflection
     */
    private void setErrorCode(NtTransQuerySecurityDescResponse response, int errorCode) throws Exception {
        // Navigate through the inheritance hierarchy to find the errorCode field
        Class<?> currentClass = response.getClass();
        Field errorCodeField = null;

        while (currentClass != null && errorCodeField == null) {
            try {

            assertTrue(AllocInfo.class.isAssignableFrom(FileFsFullSizeInformation.class));
        }

        @Test
        @DisplayName("Should verify correct interface hierarchy")
        void testInterfaceHierarchy() {
            // Create instances
            SmbInfoAllocation smbInfo = new SmbInfoAllocation();
            FileFsSizeInformation sizeInfo = new FileFsSizeInformation();