code: def step(self, action):
      observation = self.observation_space.sample()  # Dummy observation
      return (observation, 0.0, False, {})
  
imports: from typing import Optional
  import numpy
  import pytest
  from gym import core, spaces
  from gym.wrappers import OrderEnforcing, TimeLimit
label_desc: Use image node_id 2 for calling the UnittestEnv obj's underlying member method code with example usage: obj.step(action) and returns: observation,  int,  False,  dict