code: def filename_provider(request):
      yield _DefaultFilenameProvider(
          dataset_uuid="", file_format=request.param
      )
  
file_path: ray/python/ray/data/tests/test_filename_provider.py
imports: import pandas
  import pytest
  from ray.data.datasource.filename_provider import _DefaultFilenameProvider
label_desc: Use image node_id 1 for calling a global function with example usage: filename_provider(request) without return types