initAffair method
Usage: not used
Parameter: it is MM
This is called: placardMM'FirstActor'
:BUG: warning: unresolved doc reference 'FirstActor'
Implementation
void initAffair(Map<String, String> _placardM) {
print(' *************** affair class-init *********');
_placardM.forEach((k, v) => print('$k, $v'));
//
actor = _placardM['actor'].toString();
sender = _placardM['sender'].toString();
receiver = _placardM['receiver'].toString();
cmd = _placardM['command'].toString();
msg = _placardM['msg'].toString();
}