code: def _unset_federated_upstream(self, upstream_name, vhost):
      url = C_HTTP_TEMPLATE.format(
          self.endpoint,
          "{}/{}/{}/{}".format(
              "parameters", "federation-upstream", vhost, upstream_name
          ),
      )
  
      result = requests.delete(url, auth=(self.user, self.password))
      LOGGER.debug(result)
      return result
  
imports: import logging
  import time
  import requests
label_desc: Use image node_id 24 for calling the RabbitManager obj's underlying member method code with example usage: obj._unset_federated_upstream(upstream_name, vhost) and returns: result