class_docstr: Gym environment interface for Batched Environments (with batch size 1).
code: def reset(self):
      return self.batch_env.reset()[0]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from gym import Env
  import numpy
  from tensor2tensor.rl.envs.simulated_batch_env import SimulatedBatchEnv
  import tensorflow.compat.v1
label_desc: Use image node_id 3 for calling the FlatBatchEnv obj's underlying member method code with example usage: obj.reset() and returns: self