def ce.known
import bend-kit-http@0.38.5.0/http.bend as Httpimport Base
4223def ce.known(cs: List<&2, String>, +ok: List<&2, String>) -> Bool:
4224 match cs:
4225 case Nil{}:
4226 True{}
4227 case Con{c, t}:
4228 Bool.and(ce.has(ok, c), ce.known(t, ok))