code: func (c *syncCmd) discoClient() *client.Client {
  	cl := newClient(c.src, client.OptionInsecure(c.insecureTLS))
  	cl.Verbose = *cmdmain.FlagVerbose
  	cl.Logger = log.New(cmdmain.Stderr, "", log.LstdFlags)
  	return cl
  }
docs: // discoClient returns a client initialized with a server
  // based from --src or from the configuration file if --src
  // is blank. The returned client can then be used to discover
  // the blobRoot and syncHandlers.