protected function getAccessControlLists($type) {
   return array(AccessControlList::factory(AccessControlList::RULE_ACTION_ALLOW, 
                                           AccessControlList::RULE_TYPE_EVERYONE,
                                           AccessControlList::RULE_VALUE_ALL));
 }
 /**
   * Returns an access control list based on a string
   * @param string Should be in format ACTION:RULE:VALUE
   * @return AccessControlList or false if the string is invalid
   */
 public static function createFromString($aclString)
 {
     $values = explode(':', $aclString);
     if (count($values)==3) {
         return AccessControlList::factory($values[0], $values[1], $values[2]);
     } else {
         return false;
     }
 }