code: def _savefn(*args, **kwargs):
      return
  
file_path: espnet/test/test_e2e_asr_conformer.py
imports: import argparse
  import pytest
  import torch
  from espnet.nets.pytorch_backend.e2e_asr_conformer import E2E
  from espnet.nets.pytorch_backend.transformer import plot
label_desc: Use image node_id 3 for calling a global function with example usage: _savefn() without return types