code: public String logName()
      {
          if (tc.isEntryEnabled())
              Tr.entry(tc, "logName", this);
          if (tc.isEntryEnabled())
              Tr.exit(tc, "logName", _logName);
          return _logName;
      }
docs: Return the logName field stored in the target header
  
  @return long The logName field.