reduce warnings during import
reduce warnings during import

CanalTP/navitia,xlqian/navitia,xlqian/navitia,xlqian/navitia,Tisseo/navitia,Tisseo/navitia,xlqian/navitia,CanalTP/navitia,xlqian/navitia,CanalTP/navitia,CanalTP/navitia,CanalTP/navitia,Tisseo/navitia,Tisseo/navitia,Tisseo/navitia