method dst(self: timezone; _: datetime): timedelta {....raises: [], tags: [],
    forbids: [].}

method dst(self: tzinfo; dt: datetime): timedelta {.base,
    ...raises: [NotImplementedError], tags: [], forbids: [].}

method tzname(self: timezone; _: datetime): string {....raises: [], tags: [],
    forbids: [].}

method tzname(self: tzinfo; dt: datetime): string {.base,
    ...raises: [NotImplementedError], tags: [], forbids: [].}

method utcoffset(self: timezone; _: datetime): timedelta {....raises: [], tags: [],
    forbids: [].}

method utcoffset(self: tzinfo; dt: datetime): timedelta {.base,
    ...raises: [NotImplementedError], tags: [], forbids: [].}