code: public function createSender($domain, $sender)
      {
          if (!$domain)
              throw new BadMethodCallException('Parameter $domain is missing.');
          if (!$sender)
              throw new BadMethodCallException('Parameter $sender is missing.');
          if (!is_array($sender))
              throw new BadMethodCallException('Parameter $sender must be a array. ' . gettype($sender) . ' given.');
          // required fields (sender)
          if (!array_key_exists('sender', $sender))
              throw new BadMethodCallException('Parameter $sender have key sender (string).');
          // sanitize
          $t = array();
          $t['sender'] = $sender['sender'];
          // relaunch
          ($sender['relaunch']) ? $t['relaunch'] = $sender['relaunch'] : $t['relaunch'] = '';
          // reason
          ($sender['reason']) ? $t['reason'] = $sender['reason'] : $t['reason'] = '';
          unset($sender);
          try {
              $r = $this->post('sms/' . $domain . '/senders', array('Content-Type' => 'application/json;charset=UTF-8'), json_encode($t))->send();
          } catch (\Exception $e) {
              throw new SmsException($e->getMessage(), $e->getCode(), $e);
          }
      }
docs: Create a new sender
  
  @param string $domain
  @param array $sender (keys : sender (requiered) => string, relaunch => string, reason => string)
  @return void
  @throws \Ovh\Common\Exception\BadMethodCallException
  @throws Exception\SmsException