public static function transport(Mail\Transport\TransportInterface $transport = null)
{
if (null !== $transport) {
self::$transport = $transport;
} elseif (!self::$transport) {
self::setDefaultTransport();
}
return self::$transport;
}
public static function setTransport(Mail\Transport\TransportInterface $transport)
{
self::$transport = $transport;
}