return &found
		}
	}
	return nil
}

// deleteRecursive will delete an entry recursively, but not change its parent.
func (d *dataUsageCache) deleteRecursive(h dataUsageHash) {
	if existing, ok := d.Cache[h.String()]; ok {
		// Delete first if there should be a loop.
		delete(d.Cache, h.Key())
		for child := range existing.Children {
			d.deleteRecursive(dataUsageHash(child))
		}
	}
}

				return
			}
			if !into.Compacted {
				h := dataUsageHash(folder.name)
				into.addChild(h)
				// We scanned a folder, optionally send update.
				f.updateCache.deleteRecursive(h)
				f.updateCache.copyWithChildren(&f.newCache, h, folder.parent)
				f.sendUpdate()
			}
		}

		// Transfer existing
		if !into.Compacted {
			for _, folder := range existingFolders {