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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 set_flag(self, user, note=None, status=None):
 """Flags the object. :param User user: :param str note: User-defined note for this flag. :param int status: Optional status integer (the meaning is defined by a developer). :return: """

        if not user.id:
            return None

        init_kwargs = {
            'user': user,
            'linked_object': self,
        }
        if note is not None:
            init_kwargs['note'] = note
        if status is not None:
            init_kwargs['status'] = status

        flag = get_flag_model()(**init_kwargs)
        try:
            flag.save()
        except IntegrityError:  # Record already exists.
            pass
        return flag