/**
  * @param PFUSer $user
  * @param int $ugroup_id
  * @param int $group_id
  * @return boolean
  */
 public function isDynamicUGroupMember(PFUSer $user, $ugroup_id, $group_id)
 {
     $dao = new UGroupUserDao();
     return $dao->isDynamicUGroupMember($user->getId(), $ugroup_id, $group_id);
 }