public function sendNotificationInOne( $subscriber, $contentObject, $commentList = null, $tpl = null )
    {
         if ( is_null( $tpl ) )
         {
             $tpl = eZTemplate::factory();
         }
         $tpl->setVariable( 'subscriber', $subscriber );
         $tpl->setVariable( 'contentobject', $contentObject );
         if ( !is_null( $commentList ) )
         {
            $tpl->setVariable( 'comment_list', $commentList );
         }
         $subject = $tpl->fetch( $this->multiSubjectTemplatePath );
         $body = $tpl->fetch( $this->multiBodyTemplatePath );
         $this->executeSending( $subject, $body, $subscriber );
    }