docstr: The function you can write to customize transitions. In this
  specific environment, the next state is exactly the latest action taken.
  The initial observation is all zeros.
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code: def get_observation(self):
      """
      The function you can write to customize transitions. In this
      specific environment, the next state is exactly the latest action taken.
      The initial observation is all zeros.
      """
      ob = np.zeros(STATE_DIM)
      if len(self.recent_actions) > 0:
          ob[self.recent_actions[-1]] = 1
      return ob
  
imports: import logging
  from collections import defaultdict, deque
  import numpy
  import torch
  from gym import Env
  from gym.spaces import Box, Discrete
label_desc: Use image node_id 8 for calling the StringGameEnvV1 obj's underlying member method code with example usage: obj.get_observation() and returns: ob