message: added print output for LaneSection Class
diff: @@ -48,6 +48,14 @@ class LaneSection {
  Lanes lanes_;
  };
  +inline std::string print(const LaneSection &ls) {
  + std::stringstream ss;
  + ss << "s: " << ls.get_s() << std::endl;
  + for (auto const& l : ls.get_lanes())
  + ss << "Lane: " << print(*(l.second)) << std::endl;
  + return ss.str();
  +}
  +
  using LaneSectionPtr = std::shared_ptr<LaneSection>;
  } // namespace opendrive
  