code: public function getSender($domain, $sender)
      {
          if (!$domain)
              throw new BadMethodCallException('Parameter $domain is missing.');
          if (!$sender)
              throw new BadMethodCallException('Parameter $sender is missing.');
          $sender = urlencode($sender);
          try {
              $r = $this->get('sms/' . $domain . '/senders/' . $sender)->send();
          } catch (\Exception $e) {
              throw new SmsException($e->getMessage(), $e->getCode(), $e);
          }
          return $r->getBody(true);
      }
docs: Get sender object properties
  
  @param string $domain
  @param string $sender
  @return string Json
  @throws BadMethodCallException
  @throws Exception\SmsException