}

  @AndroidIncompatible
  public static CharSinkFactory pathCharSinkFactory() {
    return new PathCharSinkFactory(null);
  }

  @AndroidIncompatible
  public static CharSinkFactory appendingPathCharSinkFactory() {
    String initialString = IoTestCase.ASCII + IoTestCase.I18N;
    return new PathCharSinkFactory(initialString);
  }

  public static ByteSourceFactory asByteSourceFactory(CharSourceFactory factory) {