def post(self, where, **query):
    """Returns the API URI for the newly created item."""
    body = json.dumps(query, cls=JSONEncoder)
    item_url = self.url % where
    h = httplib2.Http()
    response, content = h.request(
        item_url, method="POST", body=body, headers=self.headers
    )
    return response["status"] == "201", response, content