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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 associate_with_notification_channel(self, id, channel_id):
 """ This API endpoint allows you to associate an alert policy with an notification channel :type id: integer :param id: The id of the policy :type channel_id: integer :param channel_id: The id of the notification channel :rtype: dict :return: The JSON response of the API :: { "policy": { "channel_ids": "list", "id": "integer" } } """


        return self._put(
            url='{0}alerts_policy_channels.json?policy_id={1}&channel_ids={2}'.format(
                self.URL,
                id,
                channel_id
            ),
            headers=self.headers
        )