private boolean eventuallyUseCompleteDuration() {
if (data.containsKey(ItemCaract.COMPLETED)
&& data.containsKey(ItemCaract.DURATION)
&& data.containsKey(ItemCaract.BEGIN) == false) {
final Instant i2 = (Instant) data.get(ItemCaract.COMPLETED);
final Duration d = (Duration) data.get(ItemCaract.DURATION);
data.put(ItemCaract.BEGIN, math.sub(i2, d));
return true;
}
return false;
}
