NonNullElements i = new NonNullElements(KEY.STATIONS, w, p); int n = 0; while (i.next() && n < 2) n++;  if (n < 2) return MoveStatus.moveFailed("Need at least 2 stations");
    public MoveStatus tryDoMove(World w, FreerailsPrincipal p) {        return tryMove(w, before, p);    }