code: def UpdateClientsFromFleetspeak(clients):
    
    if not fleetspeak_connector.CONN or not fleetspeak_connector.CONN.outgoing:
      # FS not configured, or an outgoing connection is otherwise unavailable.
      return
    id_map = {}
    for client in clients:
      if client.fleetspeak_enabled:
        id_map[fleetspeak_utils.GRRIDToFleetspeakID(client.client_id)] = client
    if not id_map:
      return
    res = fleetspeak_connector.CONN.outgoing.ListClients(
        admin_pb2.ListClientsRequest(client_ids=list(iterkeys(id_map))))
    for read in res.clients:
      api_client = id_map[read.client_id]
      api_client.last_seen_at = fleetspeak_utils.TSToRDFDatetime(
          read.last_contact_time)
      api_client.last_clock = fleetspeak_utils.TSToRDFDatetime(read.last_clock)
docs: Updates ApiClient records to include info from Fleetspeak.