code: def testGetEmpty(self):
      spec = self.default_specs()
      replay_table = episodic_table.EpisodicTable(spec, capacity=3)
      empty_values = self.np_values(spec, 0)
      values = replay_table.get_episode_values(0)
      self.evaluate(tf.compat.v1.global_variables_initializer())
      values_ = self.evaluate(values)
      tf.nest.map_structure(self.assertAllClose, empty_values, values_)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import numpy
  import tensorflow
  from tf_agents import specs
  from tf_agents.replay_buffers import episodic_table
  from tensorflow.python.framework import test_util
label_desc: Use image node_id 4 for calling the EpisodicTableTest obj's underlying member method code with example usage: obj.testGetEmpty() without return types