class_docstr: A simple environment model.
class_docstr_tok: ["A","simple","environment","model","."]
code: def action_spec(self):
      return self._action_spec
  
imports: from typing import Optional, Tuple
  from acme import specs
  from acme.agents.tf.mcts import types
  from acme.agents.tf.mcts.models import base
  from acme.tf import utils
  from bsuite.baselines.utils import replay
  import dm_env
  import numpy
  from scipy import special
  import sonnet
  import tensorflow
label_desc: Use image node_id 8 for calling the MLPModel obj's underlying member method code with example usage: obj.action_spec() and returns: self