code: protected void updateConferenceStatus(String status){
          if(cdr != null){
              final ConferenceDetailRecordsDao dao = storage.getConferenceDetailRecordsDao();
              cdr = dao.getConferenceDetailRecord(conferenceSid);
              cdr = cdr.setStatus(status);
              dao.updateConferenceDetailRecordStatus(cdr);
          }
      }
docs: /*
  Database Utility Functions