private static boolean isTagPresentation(final String presentation, final String tagName) {
          // "head", "head#id", "head.cls"
          final String lowerCased = StringUtil.toLowerCase(presentation);
          return lowerCased.startsWith(tagName) &&
                 (lowerCased.length() == tagName.length() || !Character.isLetter(lowerCased.charAt(tagName.length())));
        }
private static boolean isTagPresentation(final String presentation, final String tagName)