public function __construct($name, $options)
 {
     parent::__construct($name, $options);
     if (!is_array(self::$prepared)) {
         self::$prepared = array();
     }
     if (!is_array(self::$callback)) {
         self::$callback = array();
     }
     $this->form_field_data_cache = array();
     $this->form_id_cache = array();
 }