code: def _get_neighbor_conf(neigh_ip_address):
      
      neigh_conf = \
          CORE_MANAGER.neighbors_conf.get_neighbor_conf(neigh_ip_address)
      if not neigh_conf:
          raise RuntimeConfigError(desc='No Neighbor configuration with IP'
                                   ' address %s' % neigh_ip_address)
      assert isinstance(neigh_conf, NeighborConf)
      return neigh_conf
docs: Returns neighbor configuration for given neighbor ip address.
  
      Raises exception if no neighbor with `neigh_ip_address` exists.