code: public static ImageIcon getHelpIcon() {
          if (helpIcon == null) {
              helpIcon = DisplayUtils.getScaledIcon(new ImageIcon(ExtensionHelp.class.getResource("/resource/icon/16/201.png")));
          }
          return helpIcon;
      }
docs: Gets the help icon.
  <p>
  Should be called/used only when in view mode.
  
  @return the help icon, never {@code null}.
  @since 2.7.0