* toString() is returned.
     *
     * @return display format, potentially with resolved names
     */
    String toDisplayString();

    /**
     * Return the sAMAccountName of this SID unless it could not
     * be resolved in which case the numeric RID is returned. If this
     * SID is a domain SID, this method will return an empty String.
     *
     * @return the account name