code: public static RssGenerator of(String baseUrl, boolean root, String webTitle, String webDescription) {
          return new RssGenerator(baseUrl, root, webTitle, webDescription);
      }
docs: Helper method to create an instance of SitemapGenerator
  @param baseUrl Base URL
  @param root If Base URL is root (for example http://www.javavids.com or if
  it's some path like http://www.javalibs.com/blog)
  @param webTitle Web title
  @param webDescription Web description
  @return Instance of RssGenerator