code: def loss_tf(y, x):
      return x
  
imports: import pytest
  import numpy
  import torch.nn
  import torch
  import tensorflow
  from tensorflow import keras
  from alibi.explainers.similarity.grad import GradientSimilarity
label_desc: Use image node_id 9 for calling a global function with example usage: loss_tf(y, x) and returns: x