char[] password = authenticator.getPasswordAsCharArray();
        assertNotNull(password, "Password char array should not be null");
        assertArrayEquals(testPassword.toCharArray(), password, "Password should match");

        // Verify it returns a clone, not the original
        password[0] = 'X';
        char[] password2 = authenticator.getPasswordAsCharArray();

                    nc.setName(this.getUsername() + "@" + userDomain);
                }
            } else if (cb instanceof PasswordCallback pc) {
                char[] passwordChars = this.getPasswordAsCharArray();
                if (passwordChars != null) {
                    pc.setPassword(passwordChars);
                }
            }
        }
    }