code: def add_lb_nodes(self, lb_id, nodes):
          
          log.info("Adding load balancer nodes %s" % nodes)
          resp, body = self._request(
                  'post', 
                  '/loadbalancers/%s/nodes' % lb_id,
                  data={'nodes': nodes})
          return body
docs: Adds nodes to an existing LBaaS instance
  
          :param string lb_id:  Balancer id
  
          :param list nodes:  Nodes to add. {address, port, [condition]}
  
          :rtype :class:`list`