code: def test_pull_raises_key_error_on_unknown_table(self) -> None:
      variable_container = (
          reverb_variable_container.ReverbVariableContainer(
              self._server_address
          )
      )
      with self.assertRaises(KeyError):
          variable_container.pull("unknown_table")
  
imports: from typing import Optional, Text, Tuple
  from absl import logging
  from absl.testing import parameterized
  import numpy
  import portpicker
  import reverb
  import tensorflow.compat.v2
  from tf_agents.experimental.distributed import reverb_variable_container
  from tf_agents.system import system_multiprocessing
  from tf_agents.typing import types
  from tf_agents.utils import nest_utils
  from tf_agents.utils import test_utils
label_desc: Use image node_id 16 for calling the ReverbVariableContainerTest obj's underlying member method code with example usage: obj.test_pull_raises_key_error_on_unknown_table() without return types