code: public static HtmlTree UL(HtmlStyle styleClass, Content body) {
          HtmlTree htmltree = new HtmlTree(HtmlTag.UL, nullCheck(body));
          htmltree.addStyle(nullCheck(styleClass));
          return htmltree;
      }
docs: Generates a UL tag with the style class attribute and some content.
  
  @param styleClass style for the tag
  @param body content for the tag
  @return an HtmlTree object for the UL tag