code: def _filename_to_compression(filename: str) -> Optional[str]:
      return (
          "GZIP"
          if tf.strings.regex_full_match(filename, ".*.gz")
          else None
      )
  
file_path: scenic/scenic/projects/svvit/datasets/pileup_coverage_dataset.py
imports: import functools
  from typing import Optional, Tuple
  from absl import logging
  from flax import jax_utils
  import jax
  import jax.numpy
  from scenic.dataset_lib import dataset_utils
  from scenic.dataset_lib import datasets
  import tensorflow
label_desc: Use image node_id 2 for calling a global function with example usage: _filename_to_compression(filename) and returns: unknown