code: func LoadGopmfile(fileName string) (*goconfig.ConfigFile, error) {
  	if !base.IsFile(fileName) {
  		return goconfig.LoadFromData([]byte(""))
  	}
  
  	gf, err := goconfig.LoadConfigFile(fileName)
  	if err != nil {
  		return nil, fmt.Errorf("Fail to load gopmfile: %v", err)
  	}
  	return gf, nil
  }
docs: // LoadGopmfile loads and returns given gopmfile.