code: def set_state(self, qpos, qvel):
      super().set_state(qpos, qvel)
      state = self.sim.get_state()
      state = mujoco_py.MjSimState(
          state.time, qpos, qvel, state.act, state.udd_state
      )
      self.sim.set_state(state)
      self.sim.forward()
  
imports: from os import path
  from typing import Optional, Union
  import numpy
  import gym
  from gym import error, logger, spaces
  from gym.spaces import Space
label_desc: Use image node_id 4 for calling the MuJocoPyEnv obj's underlying member method code with example usage: obj.set_state(qpos, qvel) without return types