code: def testZeroState(self):
      policy = py_epsilon_greedy_policy.EpsilonGreedyPolicy(
          self.greedy_policy, 0.5, random_policy=self.random_policy
      )
      policy.get_initial_state()
      self.greedy_policy.get_initial_state.assert_called_once_with(
          batch_size=None
      )
      self.random_policy.get_initial_state.assert_called_once_with(
          batch_size=None
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing.absltest import mock
  from tf_agents.policies import py_epsilon_greedy_policy
  from tf_agents.trajectories import policy_step
  from tf_agents.trajectories import time_step
  from tf_agents.utils import test_utils
label_desc: Use image node_id 6 for calling the EpsilonGreedyPolicyTest obj's underlying member method code with example usage: obj.testZeroState() without return types