* @param cdataSection
     *            The CDATA section. Must not be {@literal null}.
     * @param buf
     *            The string buffer. Must not be {@literal null}.
     */
    public static void appendCDATASection(final CDATASection cdataSection, final StringBuilder buf) {
        assertArgumentNotNull("cdataSection", cdataSection);
        assertArgumentNotNull("buf", buf);

        buf.append("<![CDATA[");