message: Added auxiliary functions for the LaneCorridor
diff: @@ -53,6 +53,15 @@ struct LaneCorridor {
  }
  return nullptr;
  }
  + float GetLength() const {
  + return center_line_.length();
  + }
  + float GetS(const Point2d& pt) const {
  + return std::get<1>(get_nearest_point_and_s(center_line_, pt));
  + }
  + float LengthUntilEnd(const Point2d& pt) const {
  + return GetLength() - GetS(pt);
  + }
  //! Setter
  void SetLeftBoundary(const Line& boundary) {
  