code: def image_paths(in_dir: Path) -> Iterable[Path]:
      return (
          in_dir / "subject1_bet.nii.gz",
          in_dir / "subject2_bet.nii.gz",
      )
  
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 7 for calling a global function with example usage: image_paths(in_dir) and returns: unknown,  unknown