code: func (s *Server) WithDecisionLogger(logger func(context.Context, *Info)) *Server {
  	s.logger = func(ctx context.Context, info *Info) error {
  		logger(ctx, info)
  		return nil
  	}
  	return s
  }
docs: // WithDecisionLogger sets the decision logger used by the
  // server. DEPRECATED. Use WithDecisionLoggerWithErr instead.