code: def testInitializeAgent(self):
      agent = bern_ts_agent.BernoulliThompsonSamplingAgent(
          self._time_step_spec, self._action_spec
      )
      init_op = agent.initialize()
      if not tf.executing_eagerly():
          with self.cached_session() as sess:
              common.initialize_uninitialized_variables(sess)
              self.assertIsNone(sess.run(init_op))
  
imports: import numpy
  import tensorflow
  from tf_agents.bandits.agents import bernoulli_thompson_sampling_agent
  from tf_agents.bandits.drivers import driver_utils
  from tf_agents.policies import utils
  from tf_agents.specs import tensor_spec
  from tf_agents.trajectories import policy_step
  from tf_agents.trajectories import time_step
  from tf_agents.utils import common
label_desc: Use image node_id 3 for calling the AgentTest obj's underlying member method code with example usage: obj.testInitializeAgent() without return types