}

    /**
     * Test for unwrap() method throwing exception.
     * Verifies that unwrap can throw exceptions when appropriate.
     */
    @Test
    void testUnwrap_throwsException() {
        when(smbTree.unwrap(any())).thenThrow(new ClassCastException("Cannot unwrap to specified type"));

        assertThrows(ClassCastException.class, () -> smbTree.unwrap(CustomSmbTree.class),