}

        override fun <T : Any> useForStateLoad(action: (Layout) -> T): T {
            return withExclusiveAccessToCache(baseDir) { cacheDir ->
                action(ReadableLayout(cacheDir))
            }
        }

        override fun <T> useForStore(action: (Layout) -> T): T =
            withExclusiveAccessToCache(baseDir) { cacheDir ->
                // TODO GlobalCache require(!cacheDir.isDirectory)