def METHOD_NAME():
    expected_start_date = pendulum.parse("2023-04-07T21:29:57")
    test_report = TestPerformanceReport()
    test_report.cursor_field = "cursor_field"
    test_report.config = {"lookback_window": 10}
    stream_state = {"123": {"cursor_field": 1681766997}}
    account_id = "123"
    assert expected_start_date == test_report.get_start_date(stream_state, account_id)