@ApiStatus.Internal
  @RequiresBackgroundThread
  public static @Nullable String getIconTheme() {
    ThreadingAssertions.assertBackgroundThread();
    String result = exec("Cannot get icon theme", "gsettings", "get", "org.gnome.desktop.interface", "icon-theme");
    return trimQuotes(result);
  }
@ApiStatus.Internal
  @RequiresBackgroundThread
  public static @Nullable String getIconTheme()