},
	}
}

func (r *metacacheReader) checkInit() {
	if r.creator == nil || r.err != nil {
		return
	}
	r.err = r.creator()
	r.creator = nil
}

// peek will return the name of the next object.
// Will return io.EOF if there are no more objects.
// Should be used sparingly.
func (r *metacacheReader) peek() (metaCacheEntry, error) {
	r.checkInit()
	if r.err != nil {
		return metaCacheEntry{}, r.err