code: func HostFolderFromObject(client *govmomi.Client, obj interface{}, relative string) (*object.Folder, error) {
  	folder, err := folderFromObject(client, obj, RootPathParticleHost, relative)
  	if err != nil {
  		return nil, err
  	}
  
  	return validateHostFolder(folder)
  }
docs: // HostFolderFromObject returns an *object.Folder from a given object, and
  // relative host folder path. If no such folder is found, or if it is not a
  // host folder, an appropriate error will be returned.