def append_new
import cli@0.2.0.0/cli.bend as Cliimport Base
4020def append_new(seen: Bool, ids: List<&2, String>, id: String) ->
4021 List<&2, String>:
4022 match seen:
4023 case True{}: ids
4024 case False{}: List.append(&2, String, ids, [id])