class_docstr: Render context superclass for offscreen and window rendering.
class_docstr_tok: ["Render","context","superclass","for","offscreen","and","window","rendering","."]
docstr: Override close in your rendering subclass to perform any necessary cleanup
  after env.close() is called.
docstr_tok: ["Override","close","in","your","rendering","subclass","to","perform","any","necessary","cleanup","after","env.close","(",")","is","called","."]
code: def close(self):
      """Override close in your rendering subclass to perform any necessary cleanup
      after env.close() is called.
      """
      pass
  
imports: import collections
  import os
  import time
  from threading import Lock
  import glfw
  import imageio
  import mujoco
  import numpy
label_desc: Use image node_id 9 for calling the RenderContext obj's underlying member method code with example usage: obj.close() without return types