/**
     * Method getCharacterValue.
     *
     * @param s a s object.
     * @param parser a parser object.
     * @param attribute a attribute object.
     * @throws XmlPullParserException XmlPullParserException if
     * any.
     * @return char
     */
    private char getCharacterValue(String s, String attribute, XmlPullParser parser) throws XmlPullParserException {