override fun fileForRead(stateType: StateType) = ReadableConfigurationCacheStateFile(cacheDir.stateFile(stateType), stateType)

        override fun fileFor(stateType: StateType): ConfigurationCacheStateFile = WriteableConfigurationCacheStateFile(cacheDir.stateFile(stateType), stateType, onFileAccess)
    }

    private
    inner class ReadableLayout(
        private val cacheDir: File
    ) : Layout() {