Map.keys: def of Base
Import: import Base
Lines 3034-3035 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=3034&end_line=3035

import Base

def Map.keys(a, -V: Kind(a), m: Map<a, V>) -> List<&2, String>:
  Map.keys.go(a, V, m, Nil{})

Uses (4):
  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=Map.keys.go
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String