override fun start() {
      taskRunner.assertLockHeld()
      require(currentTask == this)
      activeThreads++

      tasksExecutor.execute {
        taskRunner.assertLockNotHeld()
        require(currentTask == this)
        try {
          runnable.run()
          require(currentTask == this) { "unexpected current task: $currentTask" }
        } finally {
          taskRunner.withLock {

  }

  public void testToString() {
    Runnable[] currentTask = new Runnable[1];
    Executor delegate =
        new Executor() {
          @Override
          public void execute(Runnable task) {
            currentTask[0] = task;
            task.run();
            currentTask[0] = null;
          }

          @Override
          public String toString() {

        public byte[] getCurrentHash() {
            synchronized (hashLock) {
                return currentHash.clone();
            }
        }

        public void updateHash(byte[] newHash) {
            synchronized (hashLock) {
                if (newHash != null && newHash.length == currentHash.length) {
                    this.currentHash = newHash.clone();
                }
            }
        }

		t.Fatalf("Stat failed with %s expected to pass.", err)
	}

	// Get umask of the bits stored.
	currentUmask := 0o777 - uint32(st.Mode().Perm())

	// Verify if umask is correct.
	if int(currentUmask) != testCase.expectedUmask {
		t.Fatalf("Umask check failed expected %d, got %d", testCase.expectedUmask, currentUmask)
	}
}

// Tests if the file creations happen with proper umask.
func TestIsValidUmaskFile(t *testing.T) {

				s.erasureDisksMu.Unlock()
				return
			}

			if currentDisk := s.erasureDisks[setIndex][diskIndex]; currentDisk != nil {
				if !reflect.DeepEqual(currentDisk.Endpoint(), disk.Endpoint()) {
					err = fmt.Errorf("Detected unexpected drive ordering refusing to use the drive: expecting %s, found %s, refusing to use the drive",
						currentDisk.Endpoint(), disk.Endpoint())
					printEndpointError(endpoint, err, false)