def get_fixtures_file_hash(all_fixture_paths: Iterable[str]) -> str:
    """
    Returns the MD5 hash of the fixture files.  Used for cache busting.
    """
    hasher = hashlib.md5()
    for fixture_path in sorted(all_fixture_paths):
        with open(fixture_path, 'rb') as fixture_file:
            hasher.update(fixture_file.read())
    return hasher.hexdigest()
Returns the MD5 hash of the fixture files.  Used for cache busting.