code: def testCreateAgentWithDefaults(self):
      # Verifies that we can create and train an agent with the default values.
      with tf.Session() as sess:
          agent = self._create_test_agent(sess)
          sess.run(tf.global_variables_initializer())
          observation = np.ones([84, 84, 1])
          agent.begin_episode([observation])
          agent.step(reward=[1], observation=[observation])
          agent.end_episode(reward=[1])
  
file_path: tensor2tensor/tensor2tensor/rl/batch_dqn_agent_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import shutil
  from absl import flags
  from dopamine.agents.dqn import dqn_agent
  from dopamine.discrete_domains import atari_lib
  import numpy
  from tensor2tensor.rl import dopamine_connector
  import tensorflow.compat.v1
label_desc: Use image node_id 3 for calling the BatchDQNAgentTest obj's underlying member method code with example usage: obj.testCreateAgentWithDefaults() without return types