class Duration implements Cloneable, Serializable, Comparable<Duration>, JAXBable<JAXBDuration> {

    public String toShortLabelString()
    {
        return new StringBuilder().append(getMagnitude()).append(' ').append(getShortLabel(getMagnitude().intValue() != 1))
                .toString();
    }

    public  Duration(BigDecimal magnitude);
    protected  Duration(long unscaledMagnitude, int scale);

}