code: def attribute_map_set(self, address, attribute_maps,
                            route_dist=None, route_family=RF_VPN_V4):
          
  
          if route_family not in SUPPORTED_VRF_RF:
              raise ValueError('Unsupported route_family: %s' % route_family)
  
          func_name = 'neighbor.attribute_map.set'
          param = {
              neighbors.IP_ADDRESS: address,
              neighbors.ATTRIBUTE_MAP: attribute_maps,
          }
          if route_dist is not None:
              param[vrfs.ROUTE_DISTINGUISHER] = route_dist
              param[vrfs.VRF_RF] = route_family
  
          call(func_name, **param)
docs: This method sets attribute mapping to a neighbor.
          attribute mapping can be used when you want to apply
          attribute to BGPUpdate under specific conditions.
  
          ``address`` specifies the IP address of the neighbor
  
          ``attribute_maps`` specifies attribute_map list that are used
          before paths are advertised. All the items in the list must
          be an instance of AttributeMap class
  
          ``route_dist`` specifies route dist in which attribute_maps
          are added.
  
          ``route_family`` specifies route family of the VRF.
          This parameter must be one of the following.
  
          - RF_VPN_V4 (default) = 'ipv4'
          - RF_VPN_V6           = 'ipv6'
  
          We can set AttributeMap to a neighbor as follows::
  
              pref_filter = PrefixFilter('192.168.103.0/30',
                                         PrefixFilter.POLICY_PERMIT)
  
              attribute_map = AttributeMap([pref_filter],
                                           AttributeMap.ATTR_LOCAL_PREF, 250)
  
              speaker.attribute_map_set('192.168.50.102', [attribute_map])