class_docstr: Actor Policy with Gaussian exploration noise.
class_docstr_tok: ["Actor","Policy","with","Gaussian","exploration","noise","."]
code: def _distribution(self, time_step, policy_state):
      raise NotImplementedError(
          "Distributions are not implemented yet."
      )
  
file_path: agents/tf_agents/policies/gaussian_policy.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from typing import Optional, Text
  import tensorflow
  import tensorflow_probability
  from tf_agents.policies import tf_policy
  from tf_agents.specs import tensor_spec
  from tf_agents.trajectories import policy_step
  from tf_agents.typing import types
label_desc: Use image node_id 4 for calling the GaussianPolicy obj's underlying member method code with example usage: obj._distribution(time_step, policy_state) without return types