code: def test_build_collate_fn():
      args = get_dummy_namespace()
  
      _ = SLUTask.build_collate_fn(args, True)
  
file_path: espnet/test/espnet2/tasks/test_slu.py
imports: from argparse import Namespace
  import pytest
  from espnet2.tasks.slu import SLUTask
label_desc: Use image node_id 9 for calling a global function with example usage: test_build_collate_fn() without return types