code: def from_proto(spec_proto):
      """Decodes a struct_pb2.StructuredValue proto into a nested spec."""
      return nested_structure_coder.decode_proto(spec_proto)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  from typing import Union
  import numpy
  import tensorflow
  import tensorflow_probability
  from tf_agents.specs import array_spec
  from tf_agents.typing import types
  from google.protobuf import text_format
  from tensorflow.core.protobuf import struct_pb2
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.saved_model import nested_structure_coder
label_desc: Use image node_id 19 for calling a global function with example usage: from_proto(spec_proto) and returns: nested_structure_coder