def terminate(self):
        """
        Terminate the Service execution.

        .. versionadded:: 1.13

        :return: None if the termination request was successful
        :raises APIError: When the service execution could not be terminated.
        """
        url = self._client._build_url('service_execution_terminate', service_execution_id=self.id)
        response = self._client._request('GET', url, params=dict(format='json'))

        if response.status_code != requests.codes.accepted:  # pragma: no cover
            raise APIError("Could not execute service '{}': {}".format(self, response))