    def cookie_name(self):
        """Use OAuth client_id for cookie name

        because we don't want to use the same cookie name
        across OAuth clients.
        """
        cookie_name = self.oauth_client_id
        if self.cookie_host_prefix_enabled:
            cookie_name = "__Host-" + cookie_name
        return cookie_name
Use OAuth client_id for cookie name

because we don't want to use the same cookie name
across OAuth clients.
jupyterhub/services/auth.py