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() {

                    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 {