code: func (ts *tagStore) linkedBlobStore(ctx context.Context, tag string) *linkedBlobStore {
  	return &linkedBlobStore{
  		blobStore:  ts.blobStore,
  		repository: ts.repository,
  		ctx:        ctx,
  		linkPathFns: []linkPathFunc{func(name string, dgst digest.Digest) (string, error) {
  			return pathFor(manifestTagIndexEntryLinkPathSpec{
  				name:     name,
  				tag:      tag,
  				revision: dgst,
  			})
  
  		}},
  	}
  }
docs: // linkedBlobStore returns the linkedBlobStore for the named tag, allowing one
  // to index manifest blobs by tag name. While the tag store doesn't map
  // precisely to the linked blob store, using this ensures the links are
  // managed via the same code path.