e, ok := d.Cache[path.Key()]
	if !ok {
		return
	}
	if e.Compacted {
		return
	}
	// If direct children have more, compact all.
	if len(e.Children) > limit && compactSelf {
		flat := d.sizeRecursive(path.Key())
		flat.Compacted = true
		d.deleteRecursive(path)
		d.replaceHashed(path, nil, *flat)
		return
	}
	total := d.totalChildrenRec(path.Key())