return blackholeSink()
        }
        if (!entry.readable) {
          written!![index] = true
        }
        val dirtyFile = entry.dirtyFiles[index]
        val sink: Sink
        try {
          sink = fileSystem.sink(dirtyFile)
        } catch (_: FileNotFoundException) {
          return blackholeSink()
        }
        return FaultHidingSink(sink) {

    cache.close()
    val cleanFile0 = getCleanFile("k1", 0)
    val cleanFile1 = getCleanFile("k1", 1)
    val dirtyFile0 = getDirtyFile("k1", 0)
    val dirtyFile1 = getDirtyFile("k1", 1)
    writeFile(cleanFile0, "A")
    writeFile(cleanFile1, "B")
    writeFile(dirtyFile0, "C")
    writeFile(dirtyFile1, "D")
    createJournal("CLEAN k1 1 1", "DIRTY k1")
    createNewCache()