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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 _get_cached_time(self):
 """Method that will allow for consistent modified and archived timestamps. Returns: self.Meta.datetime: This method will return a datetime that is compatible with the current class's datetime library. """

        if not self._cached_time:
            self._cached_time = self._meta.datetime.utcnow()

        return self._cached_time