code: def basic_render_fn(self):
      """Basic render fn that does nothing."""
      pass
  
file_path: gym/tests/testing_env.py
imports: import types
  from typing import Any, Dict, Optional, Tuple, Union
  import gym
  from gym import spaces
  from gym.core import ActType, ObsType
  from gym.envs.registration import EnvSpec
label_desc: Use image node_id 4 for calling a global function with example usage: basic_render_fn() without return types