code: func (a *API) ResolveFeedManifest(ctx context.Context, addr storage.Address) (*feed.Feed, error) {
  	trie, err := loadManifest(ctx, a.fileStore, addr, nil, NOOPDecrypt)
  	if err != nil {
  		return nil, ErrCannotLoadFeedManifest
  	}
  
  	entry, _ := trie.getEntry("")
  	if entry.ContentType != FeedContentType {
  		return nil, ErrNotAFeedManifest
  	}
  
  	return entry.Feed, nil
  }
docs: // ResolveFeedManifest retrieves the Swarm feed manifest for the given address, and returns the referenced Feed.