public function set_users($users)
 {
     $_users = array();
     foreach ($users->{'user'} as $_user) {
         $user = new HighriseUser();
         $user->load_from_xml_object($_user);
         $_users[] = $user;
     }
     $this->users = $_users;
 }
 public function me()
 {
     $xml = $this->make_request('me');
     $this->check_for_errors('User');
     $user = new HighriseUser();
     $user->load_from_xml_object(simplexml_load_string($xml));
     return $user;
 }