code: def read_values(variables):
      return math_lib.nested_map(lambda v: v.read_value(), variables)
  
file_path: trax/trax/trax2keras.py
imports: import functools
  import tensorflow.compat.v2
  from trax import fastmath
  from trax import shapes
  from trax.fastmath import numpy
  from trax.layers import base
label_desc: Use image node_id 3 for calling a global function with example usage: read_values(variables) and returns: math_lib