code: func (cli *DaemonCli) setupConfigReloadTrap() {
  	c := make(chan os.Signal, 1)
  	signal.Notify(c, unix.SIGHUP)
  	go func() {
  		for range c {
  			cli.reloadConfig()
  		}
  	}()
  }
docs: // setupConfigReloadTrap configures the USR2 signal to reload the configuration.