code: def test_build_preprocess_fn(use_preprocessor):
      args = get_dummy_namespace()
  
      new_args = {
          "use_preprocessor": use_preprocessor,
          "bpemodel": None,
          "non_linguistic_symbols": args.token_list,
          "cleaner": None,
          "g2p": None,
      }
      args.__dict__.update(new_args)
  
      _ = ASRTransducerTask.build_preprocess_fn(args, True)
  
file_path: espnet/test/espnet2/tasks/test_asr_transducer.py
imports: from argparse import Namespace
  import pytest
  from espnet2.tasks.asr_transducer import ASRTransducerTask
label_desc: Use image node_id 10 for calling a global function with example usage: test_build_preprocess_fn(use_preprocessor) without return types