code: def _filename_template(split: str) -> naming.ShardedFileTemplate:
      return naming.ShardedFileTemplate(
          dataset_name="mnist",
          split=split,
          filetype_suffix="tfrecord",
          data_dir="/path",
      )
  
file_path: datasets/tensorflow_datasets/core/subsplits_utils_test.py
imports: import pytest
  from tensorflow_datasets.core import naming
  from tensorflow_datasets.core import splits
  from tensorflow_datasets.core import subsplits_utils
label_desc: Use image node_id 1 for calling a global function with example usage: _filename_template(split) and returns: naming