authenticator = new NtlmPasswordAuthenticator("DOMAIN", "username", "password");

        // Multiple wipes should not cause errors
        authenticator.secureWipePassword();
        authenticator.secureWipePassword();
        authenticator.secureWipePassword();

        assertNull(authenticator.getPassword(), "Password should remain null after multiple wipes");
    }

        // Perform secure wipe
        auth.secureWipePassword();

        // Password should be null after wipe
        assertNull(auth.getPassword());
        assertNull(auth.getPasswordAsCharArray());

        // Calling wipe again should be safe
        auth.secureWipePassword();
        assertNull(auth.getPassword());
    }

    /**

    }

    /**
     * Securely wipes the password from memory
     */
    public void secureWipePassword() {
        if (this.password != null) {
            // Multi-pass secure wipe of password char array
            Arrays.fill(this.password, '\0');
            Arrays.fill(this.password, '\uFFFF');