public function GetNew($DiscussionID, $LastCommentID) {
      $this->CommentQuery();
      $this->FireEvent('BeforeGetNew');
      $this->OrderBy($this->SQL);
      $Comments = $this->SQL
         ->Where('c.DiscussionID', $DiscussionID)
         ->Where('c.CommentID >', $LastCommentID)
         ->Get();
      
      $this->SetCalculatedFields($Comments);
      return $Comments;
   }