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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def convert( self, dt, dst_rule=None # type: datetime # type: Union[str, None] """ Converts a datetime in the current timezone. If the datetime is naive, it will be normalized. '2013-03-31T03:30:00+02:00' If the datetime is aware, it will be properly converted. '2013-03-30T21:30:00-04:00' """

        if dt.tzinfo is None:
            return self._normalize(dt, dst_rule=dst_rule)

        return self._convert(dt)