}
  }

  @Override
  public String toString() {
    // TODO(dpb): Better toString, in the style of Futures.transform etc.
    return toStringHelper(this).add("state", state.get()).addValue(future).toString();
  }

  @SuppressWarnings({"removal", "Finalize"}) // b/260137033
  @Override
  protected void finalize() {
    if (state.get().equals(OPEN)) {

    public static final String LABELS_web_api_json_enabled = "{labels.web_api_json_enabled}";

    /** The key of the message: System Properties */
    public static final String LABELS_app_value = "{labels.app_value}";

    /** The key of the message: Default Label Value */
    public static final String LABELS_default_label_value = "{labels.default_label_value}";

    /** The key of the message: Default Sort Value */