def METHOD_NAME(database: Database, max_iso_timestamp: str = "") -> dict:
    """Return the latest reports overview."""
    timestamp_filter = {"timestamp": {"$lt": max_iso_timestamp}} if max_iso_timestamp else None
    overview = database.reports_overviews.find_one(timestamp_filter, sort=TIMESTAMP_DESCENDING)
    if overview:  # pragma: no feature-test-cover
        overview["_id"] = str(overview["_id"])
    return overview or {}