* @param tc
     * @return the server's SID
     * @throws CIFSException
     */
    SID getServerSid ( CIFSContext tc, String authorityServerName ) throws CIFSException;


    /**
     * This specialized method returns a Map of users and local groups for the
     * target server where keys are SIDs representing an account and each value
     * is an ArrayList of SIDs represents the local groups that the account is