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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 _put_policy_set(self, policy_set_id, body):
 """ Will create or update a policy set for the given path. """

        assert isinstance(body, (dict)), "PUT requires body to be a dict."
        uri = self._get_policy_set_uri(guid=policy_set_id)
        return self.service._put(uri, body)