public TimestampIntervalCollection getActiveIntervalCollection() throws InvalidTimestampIntervalException { return TimestampIntervalCollection.decode(activeIntervalCollection);
public TimestampIntervalCollection getActiveIntervalCollection() { try { return TimestampIntervalCollection.decode(activeIntervalCollection); } catch (InvalidTimestampIntervalException e) { return new TimestampIntervalCollection(); }
	public TimestampIntervalCollection getActiveIntervalCollection()			throws InvalidTimestampIntervalException {		return TimestampIntervalCollection.decode(activeIntervalCollection);	}