}

    /**
     * Test secure memory clearing in close()
     */
    @Test
    @DisplayName("Test secure memory clearing on close")
    public void testCloseSecurelyClearsMemory() {
        char[] testPassword = "CloseTestPass123!".toCharArray();
        NtlmPasswordAuthenticator auth = new NtlmPasswordAuthenticator("DOMAIN", "user", testPassword);

        // Verify password is set