/**
  * Delete all portfolio data for user
  * 
  * @param int $a_user_id 
  */
 public static function deleteUserPortfolios($a_user_id)
 {
     $all = self::getPortfoliosOfUser($a_user_id);
     if ($all) {
         include_once "Modules/Portfolio/classes/class.ilPortfolioAccessHandler.php";
         $access_handler = new ilPortfolioAccessHandler();
         foreach ($all as $item) {
             $access_handler->removePermission($item["id"]);
             $portfolio = new self($item["id"], false);
             $portfolio->delete();
         }
     }
 }