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

@Test
public void testDirectoryLeaseManager() {
    CIFSContext context = new BaseContext(new PropertyConfiguration());
    LeaseManager baseManager = new LeaseManager(context);
    DirectoryLeaseManager dirManager = new DirectoryLeaseManager(context, baseManager);