#include <set>#include <string>#include <vector>#include <sdf/sdf.hh>#include <ignition/math/Vector3.hh>#include <ignition/math/Pose3.hh>#include "gazebo/common/SingletonT.hh"#include "gazebo/util/UtilTypes.hh"#include "gazebo/gazebo_config.h"#include "gazebo/util/system.hh"