/**
     * Method getLongValue.
     *
     * @param s a s object.
     * @param strict a strict object.
     * @param parser a parser object.
     * @param attribute a attribute object.
     * @throws XmlPullParserException XmlPullParserException if
     * any.
     * @return long
     */
    private long getLongValue(String s, String attribute, XmlPullParser parser, boolean strict)

        final JsonToken token = jsonParser.getCurrentToken();
        return switch (token) {
        case VALUE_STRING -> jsonParser.getText();
        case VALUE_NUMBER_INT -> jsonParser.getLongValue();
        case VALUE_NUMBER_FLOAT -> jsonParser.getDoubleValue();
        case VALUE_TRUE -> true;
        case VALUE_FALSE -> false;
        case VALUE_NULL -> null;