public TimePeriod getBoundingTime(final Collection<ICollection> items) {
TimePeriod res = null;
Iterator<ICollection> iter = items.iterator();
while (iter.hasNext()) {
ICollection iCollection = (ICollection) iter.next();
if (iCollection.isTemporal()) {
IBaseTemporalCollection timeC = (IBaseTemporalCollection) iCollection;
if (res == null) {
res = new TimePeriod(timeC.start(), timeC.finish());
} else {
res.startTime = Math.max(res.startTime, timeC.start());
res.endTime = Math.min(res.endTime, timeC.finish());
}
}
}
return res;
}
