static @NotNull List<HtmlPanelCustomizer> getCustomizers() {
    List<HtmlCodeStylePanelExtension> extensions = EP_NAME.getExtensionList();
    if (extensions.isEmpty()) {
      return ContainerUtil.emptyList();
    }
    return ContainerUtil.map(extensions, el -> el.getCustomizer());
  }
static @NotNull List<HtmlPanelCustomizer> getCustomizers()