protected static String getFooter() {
        StringBuffer footer = new StringBuffer();
        for (int i = 0; i < NUM_BLANK_LINES; i++) {
            footer.append(DocletConstants.NL);
        }
        footer.append("</PRE>" + DocletConstants.NL + "</BODY>" +
            DocletConstants.NL + "</HTML>" + DocletConstants.NL);
        return footer.toString();
    }