code: func LoadInitConfigurationFromFile(cfgPath string) (*kubeadmapi.InitConfiguration, error) {
  	klog.V(1).Infof("loading configuration from %q", cfgPath)
  
  	b, err := ioutil.ReadFile(cfgPath)
  	if err != nil {
  		return nil, errors.Wrapf(err, "unable to read config from %q ", cfgPath)
  	}
  
  	return BytesToInitConfiguration(b)
  }
docs: // LoadInitConfigurationFromFile loads a supported versioned InitConfiguration from a file, converts it into internal config, defaults it and verifies it.