def _to_dict(self):
        """Return a json dictionary representing this model."""
        _dict = {}
        if hasattr(self, 'status') and self.status is not None:
            _dict['status'] = self.status
        if hasattr(self, 'message') and self.message is not None:
            _dict['message'] = self.message
        return _dict
Return a json dictionary representing this model.