/**
* Send sms concurrently
*
* @param bool $async
* @param Closure $complete executed after that every request gets an actual
* response
* @return void
*/
public function sendConcurrentSms($async = true, Closure $complete)
{
if ($sms instanceof Sms) {
$sms = [$sms];
}
$this->driver->sendConcurrentSms($sms);
}
