try {
      assertThat(temp.exists()).isTrue();
      assertThat(temp.isDirectory()).isTrue();
      assertThat(temp.listFiles()).isEmpty();
      File child = new File(temp, "child");
      assertThat(child.createNewFile()).isTrue();
      assertThat(child.delete()).isTrue();

      if (!isAndroid() && !isWindows()) {
        PosixFileAttributes attributes =

    try {
      assertThat(temp.exists()).isTrue();
      assertThat(temp.isDirectory()).isTrue();
      assertThat(temp.listFiles()).isEmpty();
      File child = new File(temp, "child");
      assertThat(child.createNewFile()).isTrue();
      assertThat(child.delete()).isTrue();

      if (!isAndroid() && !isWindows()) {
        PosixFileAttributes attributes =

    file.mkdir();
    return file;
  }

  @CanIgnoreReturnValue
  private File newFile(String name) throws IOException {
    File file = new File(rootDir, name);
    file.createNewFile();
    return file;
  }

    file.mkdir();
    return file;
  }

  @CanIgnoreReturnValue
  private File newFile(String name) throws IOException {
    File file = new File(rootDir, name);
    file.createNewFile();
    return file;
  }

   */
  @SuppressWarnings("GoodTime") // reading system time without TimeSource
  public static void touch(File file) throws IOException {
    checkNotNull(file);
    if (!file.createNewFile() && !file.setLastModified(System.currentTimeMillis())) {
      throw new IOException("Unable to update modification time of " + file);
    }
  }

  /**