* Last observation-point of this fixation line.
*
* @return .
*/
public long getStopTime() {
final Fixation fixation = this.$fixations.compact().get(-1);
if (fixation == null || fixation.getTrackingEvents() == null) return 0;
final EyeTrackingEvent trackingEvent = $(fixation.getTrackingEvents()).get(-1);
if (trackingEvent == null) return 0;
return trackingEvent.getEventTime();
}