class_docstr: Superclass for all MuJoCo environments.
class_docstr_tok: ["Superclass","for","all","MuJoCo","environments","."]
code: def close(self):
      if self.viewer is not None:
          self.viewer = None
          self._viewers = {}
  
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 13 for calling the BaseMujocoEnv obj's underlying member method code with example usage: obj.close() without return types