/**
* Send a single sms or multiple sms
*
* @param mixed $sms an instance of Messenger\Sms or an array with multiple
* Messenger\Sms instances
* @return mixed the array of responses or the instance of the
* response itself in case of only 1 sent sms
*/
public function sendSms($sms)
{
if ($sms instanceof Sms) {
$sms = [$sms];
}
$response = $this->driver->sendSms($sms);
return count($response) > 1 ? $response : $response[0];
}
