private LayoutElementBuilderService<?> getElementBuilder(JpsPackagingElement layoutElement) {
    final LayoutElementBuilderService<?> builder = myBuilders.get(layoutElement.getClass());
    if (builder == null) {
      LOG.error("Builder not found for artifact output layout element of class " + layoutElement.getClass());
    }
    return builder;
  }
private LayoutElementBuilderService<?> getElementBuilder(JpsPackagingElement layoutElement)