public void actionPerformed(ActionEvent e) {
   JMenuItem jmi = (JMenuItem) e.getSource();
   Iterator marks = mediator.getMarkerModel().getMarkersWithLabel(jmi.getText());
   if (marks.hasNext()) {
     ChronicleMarker marker = (ChronicleMarker) marks.next();
     Instant to = marker.getWhen();
     Instant from = mediator.getMajorMoment();
     viper.api.impl.Util.shiftDescriptors(new Descriptor[] {desc}, from, to);
   }
 }
 public void actionPerformed(ActionEvent e) {
   Iterator toInterp = Collections.singleton(desc).iterator();
   JMenuItem jmi = (JMenuItem) e.getSource();
   Iterator marks = mediator.getMarkerModel().getMarkersWithLabel(jmi.getText());
   if (marks.hasNext()) {
     ChronicleMarker marker = (ChronicleMarker) marks.next();
     Instant to = marker.getWhen();
     Instant from = mediator.getMajorMoment();
     mediator.getPropagator().interpolateDescriptors(toInterp, from, to);
   }
 }