protected function GetSendReviewCommentNotificationEmail()
    {
        $sSendReviewCommentNotificationEmail = '';
        if (!empty($this->fieldAuthorEmail)) {
            $sSendReviewCommentNotificationEmail = $this->fieldAuthorEmail;
        } elseif (!empty($this->fieldDataExtranetUserId)) {
            $oAuthor = TdbDataExtranetUser::GetNewInstance();
            if ($oAuthor->Load($this->fieldDataExtranetUserId)) {
                $sSendReviewCommentNotificationEmail = $oAuthor->GetUserEMail();
            }
        }

        return $sSendReviewCommentNotificationEmail;
    }