assertTrue(entry1.isComplete());
        assertTrue(entry2.isComplete());
        assertTrue(entry1.hasChild("document.txt"));
        assertFalse(entry1.hasChild("subfolder"));
        assertTrue(entry2.hasChild("subfolder"));
        assertFalse(entry2.hasChild("document.txt"));

        // Test individual change notification

        assertFalse(entry.hasChild("file1.txt"));

        // Test FILE_MODIFIED
        entry.updateChild("file2.txt", 2048L, 2000L, false, 0x20, 600L, 900L);
        directoryLeaseManager.handleDirectoryChange(directoryPath, "file2.txt", DirectoryChangeNotifier.DirectoryChangeType.FILE_MODIFIED);
        assertFalse(entry.hasChild("file2.txt")); // Should be removed to force refresh

    entry.updateChild("file1.txt", attrs);
    
    assertTrue(entry.hasChild("file1.txt"));
    assertEquals(1, entry.getChildren().size());
    
    // Test removal
    entry.removeChild("file1.txt");
    assertFalse(entry.hasChild("file1.txt"));
    assertEquals(0, entry.getChildren().size());
}

@Test
public void testDirectoryLeaseManager() {

        // Add a child
        entry.updateChild(childName, 1024L, 1000L, false, 0x20, 500L, 800L);
        assertTrue(entry.hasChild(childName));

        // Remove the child
        entry.removeChild(childName);
        assertFalse(entry.hasChild(childName));
        assertTrue(entry.hasChanges());

        // Remove non-existent child - should not change state

                    var parentCache = dirManager.getCacheEntry(parentPath);
                    if (parentCache != null && parentCache.isComplete()) {
                        boolean exists = parentCache.hasChild(smbFile.getName());
                        log.debug("Using cached existence check for: {}", smbFile.getPath());
                        return exists;
                    }
                }
            }

            lock.readLock().unlock();
        }
    }

    /**
     * Check if a child exists
     *
     * @param name child name
     * @return true if child exists
     */
    public boolean hasChild(String name) {
        lock.readLock().lock();
        try {
            lastAccessTime = System.currentTimeMillis();
            return children.containsKey(name);
        } finally {