protected function importUsers(SimpleXMLElement $sx) {
      if (isset($sx->users)) {
         $nodes = array();
         foreach($sx->users->user as $p) {
            $nodes[] = $p;
         }
 
         usort($nodes, array('ContentImporter', 'setupPageNodeOrder'));
 
         Loader::model('attribute/type');
         Loader::model('attribute/categories/user');
 
         foreach($nodes as $px) {
            $args = array();
 
            $args['uName'] = $px['username'];
            $args['uEmail'] = $px['username'];
            $args['uPassword'] = $px['password'];
            $args['uPasswordConfirm'] = $px['password'];
 
            $process = UserInfo::register($args);
            if (is_object($process)) {
 
               $u = new User($px['username'], $px['password']);
 
               $ui = UserInfo::getByID($process->getUserID());
               if (is_object($ui)) {
                  // append users to group (Webshop gebruikers)
                  $group = Group::getByName("Webshop gebruikers");
                  if (is_object($group)) { 
                     $ui->updateGroups(array($group->getGroupID()));
                  }
               }
 
               $ui->markValidated();
 
               if (isset($px->attributes)) {
                  foreach($px->attributes->children() as $attr) {
                     $ak = UserAttributeKey::getByHandle($attr['handle']);
                     $process->setAttribute((string) $attr['handle'], $ak->getController()->importValue($attr));
                  }
               }
 
               $u->logout();
            }
         }
      }
   }