class_docstr: Legacy env that implicitly implements the old API as a protocol.
class_docstr_tok: ["Legacy","env","that","implicitly","implements","the","old","API","as","a","protocol","."]
code: def step(self, action: Any) -> Tuple[int, float, bool, Dict]:
      return 0, 0.0, False, {}
  
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 3 for calling the LegacyEnvImplicit obj's underlying member method code with example usage: obj.step(action) and returns: int,  int,  False,  dict