Map.keys.go: def of Base
Import: import Base
Lines 3024-3032 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=3024&end_line=3032

import Base

def Map.keys.go(a, -V: Kind(a), m: Map<a, V>, acc: List<&2, String>) ->
  List<&2, String>:
  match m:
    case MTip{}:
      acc
    case MLeaf{k, v}:
      k <> acc
    case MNode{pos, lo, hi}:
      Map.keys.go(a, V, lo, Map.keys.go(a, V, hi, acc))

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Map
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String