def destroy_comment(self, access_token, comment_id):
        """doc: http://open.youku.com/docs/doc?id=42
        """
        url = 'https://openapi.youku.com/v2/comments/destroy.json'
        data = {
            'client_id': self.client_id,
            'access_token': access_token,
            'comment_id': comment_id
        }
        r = requests.post(url, data=data)
        check_error(r)
        return r.json()['id']