private static @NotNull Icon setSouthWest(@NotNull Icon main, @NotNull Icon southWest) {
    LayeredIcon layeredIcon = new LayeredIcon(2);

    layeredIcon.setIcon(main, 0);
    layeredIcon.setIcon(southWest, 1, SwingConstants.SOUTH_WEST);

    return layeredIcon;
  }
private static @NotNull Icon setSouthWest(@NotNull Icon main, @NotNull Icon southWest)