SOA Service Client : Get TC Session Information

How to get TCSession information?

private static void getTCSessionInfo() throws ServiceException
    {
       //com.teamcenter.services.strong.core.SessionService
        SessionService sessionService = SessionService.getService(connection);
        GetTCSessionInfoResponse res =  sessionService.getTCSessionInfo();
        System.out.println(res.extraInfo);
    }