Starting with NServiceBus.NHibernate version 8.3.0, the built-in gateway API is obsolete and using it will produce the following message:
NHibernate gateway persistence is deprecated. Use the new NServiceBus.Gateway.Sql dedicated package. Will be treated as an error from version 9.0.0. Will be removed in version 10.0.0.
To migrate to the new gateway API: