code: public static HtmlTree UL(HtmlStyle styleClass, Content first, Content... more) {
          HtmlTree htmlTree = new HtmlTree(HtmlTag.UL);
          htmlTree.addContent(nullCheck(first));
          for (Content c : more) {
              htmlTree.addContent(nullCheck(c));
          }
          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 first initial content to be added
  @param more a series of additional content nodes to be added
  @return an HtmlTree object for the UL tag