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