/**
  * @param ISummit $summit
  * @param int $page
  * @return mixed
  */
 public function getOrdersBySummit(ISummit $summit, $page = 1)
 {
     $event_id = $summit->getExternalEventId();
     $url = sprintf('%s/events/%s/orders', self::BaseUrl, $event_id);
     return $this->getEntity($url, ['expand' => 'attendees', 'status' => 'active', 'page' => intval($page)]);
 }