assets/object/class/box/box2/joint_base_link-link1.json

{"joint_type": "revolute", "upper": 0.8975979010256552, "lower": -0.001, "joint_transformation": [[1.0, 0.0, 0.0, 0.004964498306068765], [0.0, 1.0, 0.0, 0.0017171876071708295], [0.0, 0.0, 1.0, 0.0029838779286174844], [0.0, 0.0, 0.0, 1.0]]}