code: public function getDefault()
      {
          $default = array();
          for ($i = 0, $count = count($this->options); $i < $count; $i++) {
              if ($this->options[$i]->getAttribute('selected') !== false) {
                  $default[] = $this->options[$i]->getDefault();
              }
          }
  
          return $default;
      }
docs: Scans options for defaults to populate the value array().
  
  @return array        Selected fields.