public TimelineEvent<T> getTimelineEvent() {
        return timelineEvent;
    }
Gets a cloned {@link TimelineEvent} with the modifications if any.
You should update your {@link org.primefaces.model.timeline.TimelineModel} with this instance to keep sync between
UI and model.
@return
primefaces/src/main/java/org/primefaces/event/timeline/TimelineModificationEvent.java