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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 renew_access_token(self):
 """ Sets a new access token on the User using the refresh token. """

        auth_params = {'REFRESH_TOKEN': self.refresh_token}
        self._add_secret_hash(auth_params, 'SECRET_HASH')
        refresh_response = self.client.initiate_auth(
            ClientId=self.client_id,
            AuthFlow='REFRESH_TOKEN',
            AuthParameters=auth_params,
        )

        self._set_attributes(
            refresh_response,
            {
                'access_token': refresh_response['AuthenticationResult']['AccessToken'],
                'id_token': refresh_response['AuthenticationResult']['IdToken'],
                'token_type': refresh_response['AuthenticationResult']['TokenType']
            }
        )