code: def reset(self):
      self.steps = 0
  
      self.state = self.start_state
  
      return self._get_obs()
  
file_path: coach/rl_coach/environments/toy_problems/exploration_chain.py
imports: from enum import Enum
  import gym
  import numpy
  from gym import spaces
label_desc: Use image node_id 5 for calling the ExplorationChain obj's underlying member method code with example usage: obj.reset() and returns: self