code: def testPolicyStateSpecIsEmpty(self):
      policy = scripted_py_policy.ScriptedPyPolicy(
          time_step_spec=self._time_step_spec,
          action_spec=[],
          action_script=[],
      )
      self.assertEqual(policy.policy_state_spec, ())
  
file_path: agents/tf_agents/policies/scripted_py_policy_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  from tf_agents.policies import scripted_py_policy
  from tf_agents.specs import array_spec
  from tf_agents.trajectories import time_step
  from tf_agents.utils import test_utils
label_desc: Use image node_id 7 for calling the ScriptedPyPolicyTest obj's underlying member method code with example usage: obj.testPolicyStateSpecIsEmpty() without return types