Preemptive basic auth


I am trying to test a service which requires preemptive basic auth.
I cannot seem to find any way to enforce this behavior with Gatling request (neither in protocol specification or authentication realm).

I tried to Google it, but no luck this time.

Is there any out-of-the-box way to enforce preemptive basic auth on a request?

Best regards,

Currently, Basic Auth in Gatling is always preemptive.