code: func Write(ctx context.Context, store storage.Store, txn storage.Transaction, m bundle.Manifest) error {
  
  	var value interface{} = m
  
  	if err := util.RoundTrip(&value); err != nil {
  		return err
  	}
  
  	if err := storage.MakeDir(ctx, store, txn, bundlePath); err != nil {
  		return err
  	}
  
  	return store.Write(ctx, txn, storage.AddOp, manifestPath, value)
  }
docs: // Write the manifest into the storage. This function is called when
  // the bundle is activated.