code: def testInitializeRestoreVariableCollection(self):
      if not tf.executing_eagerly():
          self.skipTest("Test only works in eager mode.")
      num_actions = 5
      encoding_dim = 7
      variable_collection = (
          neural_linucb_agent.NeuralLinUCBVariableCollection(
              num_actions=num_actions, encoding_dim=encoding_dim
          )
      )
      self.evaluate(tf.compat.v1.global_variables_initializer())
      self.evaluate(variable_collection.num_samples_list)
      checkpoint = tf.train.Checkpoint(
          variable_collection=variable_collection
      )
      checkpoint_dir = self.get_temp_dir()
      checkpoint_prefix = os.path.join(checkpoint_dir, "checkpoint")
      checkpoint.save(file_prefix=checkpoint_prefix)
  
      variable_collection.actions_from_reward_layer.assign(False)
  
      latest_checkpoint = tf.train.latest_checkpoint(checkpoint_dir)
      checkpoint_load_status = checkpoint.restore(latest_checkpoint)
      self.evaluate(checkpoint_load_status.initialize_or_restore())
      self.assertEqual(
          self.evaluate(variable_collection.actions_from_reward_layer),
          True,
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  from absl.testing import parameterized
  import numpy
  import tensorflow
  import tensorflow_probability
  from tf_agents.bandits.agents import neural_linucb_agent
  from tf_agents.bandits.agents import utils
  from tf_agents.bandits.drivers import driver_utils
  from tf_agents.bandits.networks import global_and_arm_feature_network
  from tf_agents.bandits.specs import utils
  from tf_agents.networks import network
  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 8 for calling the NeuralLinUCBAgentTest obj's underlying member method code with example usage: obj.testInitializeRestoreVariableCollection() without return types