long departureTime = instance.getDepartureTime();
TPOfflineTransferVertex toVertex = new TPOfflineTransferVertex(_context,
instance);
EdgeNarrative narrative = narrative(s0, _fromVertex, toVertex);
OBAStateEditor edit = (OBAStateEditor) s0.edit(this, narrative);
edit.setTime(departureTime);
int dwellTime = (int) ((departureTime - time) / 1000);