Looking for example of GORM / pgx connecting to postgres with Kerberos

Question

Been looking for an example or documentation leveraging kerberos with GORM or pgx, to connect to Postgres Db.

Found some references, on pgx

import (
 "github.com/jackc/pgconn"
 "github.com/otan/gopgkrb5"
)

func init() {
  pgconn.RegisterGSSProvider(func() (pgconn.GSS, error) { return gopgkrb5.NewGSS() })
}

Thank you, Bob

Been surfing for a bit, but cant seem to find anything that really explains what needs to be done to get the connection set.