Spawn SDF and control joints
I have an SDF file of a robot, and would like to be able to control it's joints in the same way as shown in the tutorial here.
The reason why I need this is that I need gearbox joints in my model, like in the example here, but they cannot be parsed in URDF. On the other hand, I also need to able to control joint torques, which seems like it cannot work in SDF.