https://github.com/JuliaRobotics/RigidBodyDynamics.jl/blob/d6df4ebeb927e98bfa5216997c5d08502273189c/examples/4.%20Jacobian%20IK%20and%20Control/4.%20Jacobian%20IK%20and%20Control.jl#L59-L61 
RigidBodyDynamics.jl/examples/4. Jacobian IK and Control/4. Jacobian IK and Control.jl
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