public SummaryInformation(final PropertySet ps) throws UnexpectedPropertySetTypeException {super(ps);if (!isSummaryInformation()) {throw new UnexpectedPropertySetTypeException("Not a " + getClass().getName());}}

public SummaryInformation(PropertySet ps): base(ps){if (!IsSummaryInformation)throw new UnexpectedPropertySetTypeException("Not a "+ GetType().Name);}
