code: func findLabel(label string) *config.Config {
  	for _, dir := range cfsslConfigDirs {
  		cfgFile := filepath.Join(dir, label+".json")
  		cfg, err := config.LoadFile(cfgFile)
  		if err == nil {
  			return cfg
  		}
  	}
  
  	return nil
  }
docs: // The CFSSL standard is to have a configuration file for a label as
  // <config>.json.