docs: def GetLabelFromFleetspeak(client_id):
    """Returns the primary GRR label to use for a fleetspeak client."""
    res = fleetspeak_connector.CONN.outgoing.ListClients(
        admin_pb2.ListClientsRequest(client_ids=[GRRIDToFleetspeakID(client_id)]))
    if not res.clients or not res.clients[0].labels:
      return fleetspeak_connector.unknown_label
  
    for label in res.clients[0].labels:
      if label.service_name != "client":
        continue
      if label.label in fleetspeak_connector.label_map:
        return fleetspeak_connector.label_map[label.label]
  
    return fleetspeak_connector.unknown_label