def METHOD_NAME(self):
    name = "Custom Chief's Day"
    self.assertHolidayName(name, (f"{year}-03-05" for year in range(1981, 2050)))
    dt = (
        "2000-03-06",
        "2006-03-06",
        "2017-03-06",
        "2023-03-06",
    )
    self.assertHolidayName(f"{name} (Observed)", dt)
    self.assertNoNonObservedHoliday(dt)