func DatastoreFolderFromObject(client *govmomi.Client, obj interface{}, relative string) (*object.Folder, error) {
	folder, err := folderFromObject(client, obj, RootPathParticleDatastore, relative)
	if err != nil {
		return nil, err
	}

	return validateDatastoreFolder(folder)
}
func DatastoreFolderFromObject(client *govmomi.Client, obj interface{}, relative string) (*object.Folder, error) {
	folder, err := folderFromObject(client, obj, RootPathParticleDatastore, relative)
	if err != nil {
		return nil, err
	}

	return validateDatastoreFolder(folder)
}
// DatastoreFolderFromObject returns an *object.Folder from a given object,
// and relative datastore folder path. If no such folder is found, of if it is
// not a datastore folder, an appropriate error will be returned.