class_docstr: Fake variable source.
class_docstr_tok: ["Fake","variable","source","."]
code: def get_variables(
      self, names: Sequence[str]
  ) -> List[types.NestedArray]:
      if self._barrier is not None:
          self._barrier.wait()
      return [self._variables[name] for name in names]
  
imports: import threading
  from typing import List, Mapping, Optional, Sequence, Callable, Iterator
  from acme import core
  from acme import specs
  from acme import types
  from acme import wrappers
  import dm_env
  import numpy
  import reverb
  from rlds import rlds_types
  import tensorflow
  import tree
label_desc: Use image node_id 2 for calling the VariableSource obj's underlying member method code with example usage: obj.get_variables(names) and returns: unknown