code: def my_parse_emb_fn(embedding):
      return embedding, None, embedding
  
file_path: euler/examples/sample_solution/sample_solution_model.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow
  import tf_euler
  from tf_euler.python.solution.base_sample import SuperviseSampleSolution
  from tf_euler.python.mp_utils.base_gnn import BaseGNNNet
  from euler_estimator import SampleEstimator
label_desc: Use image node_id 2 for calling a global function with example usage: my_parse_emb_fn(embedding) and returns: embedding,  None,  embedding