def last_of
import bend-lint-rules@0.2.0.0/layout/format.bend as Formatimport Base
1140def last_of(xs: List<&2, Tree>, at: Maybe<&2, Tree>) -> Maybe<&2, Tree>:
1141 match xs:
1142 case Nil{}:
1143 at
1144 case Con{x, rest}:
1145 last_of(rest, Some{x})