code: func (i *Handle) doGetConfigCmd() (*Config, error) {
  	msg, err := i.doCmdWithoutAttr(ipvsCmdGetConfig)
  	if err != nil {
  		return nil, err
  	}
  
  	res, err := i.parseConfig(msg[0])
  	if err != nil {
  		return res, err
  	}
  	return res, nil
  }
docs: // doGetConfigCmd a wrapper function to be used by GetConfig