public function toArray()
{
$returnValue = parent::toArray();
$returnValue['_isValid'] = $this->_isValid;
$returnValue['_user'] = $this->_user;
$returnValue['addDate'] = is_null($this->addDate) ? null : $this->addDate->toString('YYYY.MM.dd HH:mm:ss');
$returnValue['setDate'] = is_null($this->setDate) ? null : $this->setDate->toString('YYYY.MM.dd HH:mm:ss');
return (array) $returnValue;
}
