code: def _get_expected_url(name):
      base = "https://physionet.org/physiobank/database/sleep-edfx/"
      midle = (
          "sleep-cassette/"
          if name.startswith("SC")
          else "sleep-telemetry/"
      )
      return base + midle + "/" + name
  
file_path: mne-python/mne/datasets/sleep_physionet/tests/test_physionet.py
imports: from pathlib import Path
  import pytest
  from mne.datasets.sleep_physionet import age, temazepam
  from mne.datasets.sleep_physionet._utils import AGE_SLEEP_RECORDS, TEMAZEPAM_SLEEP_RECORDS, _update_sleep_age_records, _update_sleep_temazepam_records
  from mne.utils import requires_good_network
label_desc: Use image node_id 3 for calling a global function with example usage: _get_expected_url(name) and returns: unknown