code: def step(self, action):
      # action is an int in the range [0, self.bit_length)
      self.state[action] = int(not self.state[action])
      self.steps += 1
  
      return (self._get_obs(), self._reward(), self._terminate(), {})
  
file_path: coach/rl_coach/environments/toy_problems/bit_flip.py
imports: import random
  import gym
  import numpy
  from gym import spaces
label_desc: Use image node_id 4 for calling the BitFlip obj's underlying member method code with example usage: obj.step(action) and returns: self,  self,  self,  dict