}
	return map[string]string{r.contentHash.Type.String(): r.contentHash.Encoded}
}

var _ io.Closer = (*Reader)(nil) // compiler check

// Close and release resources.

		return nil, ErrHeader
	}

	// Parse for all member entries.
	// numEntries is trusted after this since a potential attacker must have
	// committed resources proportional to what this library used.
	if err := feedTokens(2 * numEntries); err != nil {
		return nil, err
	}
	spd := make(sparseDatas, 0, numEntries)
	for i := int64(0); i < numEntries; i++ {