code: def testCreateAgentWithArraySpecs(self, agent_class):
      observation_spec = tensor_spec.to_array_spec(
          self._observation_spec
      )
      action_spec = tensor_spec.to_array_spec(self._action_spec)
      time_step_spec = tensor_spec.to_array_spec(self._time_step_spec)
      q_net = DummyNet(observation_spec, action_spec)
      agent = agent_class(
          time_step_spec, action_spec, q_network=q_net, optimizer=None
      )
      self.assertIsNotNone(agent.policy)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  import tensorflow
  from tf_agents.agents.dqn import dqn_agent
  from tf_agents.networks import network
  from tf_agents.networks import q_network
  from tf_agents.networks import sequential
  from tf_agents.networks import test_utils
  from tf_agents.specs import tensor_spec
  from tf_agents.trajectories import policy_step
  from tf_agents.trajectories import test_utils
  from tf_agents.trajectories import time_step
  from tf_agents.trajectories import trajectory
  from tf_agents.utils import common
  from tf_agents.utils import test_utils
label_desc: Use image node_id 3 for calling the DqnAgentTest obj's underlying member method code with example usage: obj.testCreateAgentWithArraySpecs(agent_class) without return types