class_docstr: Legacy env that explicitly implements the old API.
class_docstr_tok: ["Legacy","env","that","explicitly","implements","the","old","API","."]
code: def render(self, mode="human"):
      if mode == "human":
          return
      elif mode == "rgb_array":
          return np.zeros((1, 1, 3), dtype=np.uint8)
  
imports: import sys
  from typing import Any, Dict, Optional, Tuple
  import numpy
  import gym
  from gym.spaces import Discrete
  from gym.wrappers.compatibility import EnvCompatibility, LegacyEnv
label_desc: Use image node_id 4 for calling the LegacyEnvExplicit obj's underlying member method code with example usage: obj.render(mode) and returns: np