in gke-windows-builder/builder/builder/gce.go [364:372]
func (s *Server) refreshInstance() error {
inst, err := s.service.Instances.Get(s.projectID, s.zone, s.instance.Name).Do()
if err != nil {
log.Printf("Could not refresh instance: %v", err)
return err
}
s.instance = inst
return nil
}