public static Episode deepCopy(Episode episode, Factory factory) {
Episode clone = factory.newEpisode();
for (String key : episode.keys()) {
clone.setAttribute(key, episode.getAttribute(key));
}
for (Segment act : episode.getActivities()) {
Segment actClone = shallowCopy(act, factory);
clone.addActivity(actClone);
}
for (Segment leg : episode.getLegs()) {
Segment legClone = shallowCopy(leg, factory);
clone.addLeg(legClone);
}
return clone;
}