code: def final_value_by_ref(tf_variables):
      # TODO(tomhennigan) Consider rolling own ref class comparing by name/shape.
      return {v.ref(): v.tensor_value for v in tf_variables}
  
imports: import collections
  import functools
  import itertools
  import threading
  import contextlib
  from sonnet.src.functional import utils
  import tensorflow
label_desc: Use image node_id 14 for calling a global function with example usage: final_value_by_ref(tf_variables) and returns: unknown