log.debug("Got callback " + cb.getClass().getName());
            }

            if (cb instanceof NameCallback nc) {
                String userDomain = this.getSpecifiedUserDomain();
                if (this.getUsername() != null && userDomain != null) {
                    nc.setName(this.getUsername() + "@" + userDomain);
                }

        return this.domain;
    }

    /**
     * Get the original specified user domain
     *
     * @return the original specified user domain
     */
    public String getSpecifiedUserDomain() {
        return this.domain;
    }

    /**
     * Returns the username.
     *
     * @return the username
     */
    public String getUsername() {
        return this.username;