<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _upcoming_datetime_from(self):
 """ The datetime this event next starts in the local time zone, or None if it is finished. """

        nextDt = self.__localAfter(timezone.localtime(), dt.time.max,
                                   excludeCancellations=True,
                                   excludeExtraInfo=True)
        return nextDt