public function DiscussionsController_MarkCategoryViewed_Create($Sender, $CategoryID) {
		if (strlen($CategoryID) > 0 && (int)$CategoryID > 0) {
         $CategoryModel = new CategoryModel();
			$this->MarkCategoryRead($CategoryModel, $CategoryID);
			$this->RecursiveMarkCategoryRead($CategoryModel, CategoryModel::Categories(), array($CategoryID));
		}
      
		Redirect(Gdn::Request()->GetValueFrom(Gdn_Request::INPUT_SERVER, 'HTTP_REFERER'));
	}