code: func NewFsLoader(fs utilfs.Filesystem, kubeletFile string) (Loader, error) {
  	_, kubeletCodecs, err := kubeletscheme.NewSchemeAndCodecs()
  	if err != nil {
  		return nil, err
  	}
  
  	return &fsLoader{
  		fs:            fs,
  		kubeletCodecs: kubeletCodecs,
  		kubeletFile:   kubeletFile,
  	}, nil
  }
docs: // NewFsLoader returns a Loader that loads a KubeletConfiguration from the `kubeletFile`