code: func flagWithRequestLogging(fs *flag.FlagSet, addr *bool, def string) {
  	fs.BoolVar(
  		addr,
  		"with-request-logging",
  		defBool(def),
  		`Enables gRPC request logging. Please note that gRPC requests are
          logged at the INFO log level; so please adjust the log level accordingly.`)
  }
docs: // flagWithRequestLogging adds the --with-request-logging flag to the
  // specified flagset.