code: def _output_transform(output):
      return output["y_pred"], output["y"]
  
file_path: ignite/tests/ignite/metrics/test_fbeta.py
imports: import os
  import numpy
  import pytest
  import torch
  from sklearn.metrics import fbeta_score
  import ignite.distributed
  from ignite.engine import Engine
  from ignite.metrics import Fbeta, Precision, Recall
label_desc: Use image node_id 2 for calling a global function with example usage: _output_transform(output) and returns: output,  output