@Test
    public void test_atomicCreateDirectories_nestedPath() throws Exception {
        // Test that Files.createDirectories creates nested directories atomically
        Path tempDir = Files.createTempDirectory("toctou_cmd_test");
        try {
            Path nestedPath = tempDir.resolve("a").resolve("b").resolve("c");
            assertFalse(Files.exists(nestedPath));

      E e;
      while (n < maxElements && (e = q.poll()) != null) {
        c.add(e);
        ++n;
      }
      return n;
    } finally {
      monitor.leave();
    }
  }

  /**
   * Atomically removes all of the elements from this queue. The queue will be empty after this call
   * returns.
   */
  @Override
  public void clear() {
    Monitor monitor = this.monitor;
    monitor.enter();
    try {

  public String toString() {
    Monitor monitor = this.monitor;
    monitor.enter();
    try {
      return super.toString();
    } finally {
      monitor.leave();
    }
  }

  /**
   * Atomically removes all of the elements from this queue. The queue will be empty after this call
   * returns.
   */
  @Override
  public void clear() {
    E[] items = this.items;
    Monitor monitor = this.monitor;

  public String toString() {
    Monitor monitor = this.monitor;
    monitor.enter();
    try {
      return super.toString();
    } finally {
      monitor.leave();
    }
  }

  /**
   * Atomically removes all of the elements from this queue. The queue will be empty after this call
   * returns.
   */
  @Override
  public void clear() {
    E[] items = this.items;
    Monitor monitor = this.monitor;

     * Only indices matching the specified target prefixes are rebuilt.
     * For each index: creates a backup, reindexes data, creates a new index, reindexes from backup,
     * atomically switches aliases, then cleans up old and backup indices.
     *
     * @param loadBulkData    whether to load default bulk data after rebuilding (using OpType.CREATE to skip existing documents)