code: def labels_path(in_dir: Path) -> Path:
      return in_dir / "epoch_labels.npy"
  
file_path: brainiak/tests/io/test_io.py
imports: from pathlib import Path
  from typing import Iterable, Sequence
  import nibabel
  import numpy
  import pytest
  from brainiak import io
label_desc: Use image node_id 4 for calling a global function with example usage: labels_path(in_dir) and returns: unknown