code: def get_fci_test_data_dir(base_dir=None):
      """Get directory for FCI test data."""
      base_dir = base_dir or config.get("demo_data_dir", ".")
      return pathlib.Path(base_dir) / "fci" / "test_data"
  
file_path: satpy/satpy/demo/fci.py
imports: import pathlib
  import tarfile
  import tempfile
  from satpy import config
  from .None import utils
label_desc: Use image node_id 2 for calling a global function with example usage: get_fci_test_data_dir(base_dir) and returns: unknown