StopTimeEntry stopTime = bst.getStopTime();
int dwellTime = stopTime.getSlackTime();
EdgeNarrative narrative = createNarrative(s0);
StateEditor edit = s0.edit(this, narrative);
edit.incrementTimeInSeconds(dwellTime);
edit.incrementWeight(dwellTime);
return edit.makeState();
}
private EdgeNarrative createNarrative(State s0) {