Value.at: def of yaml-for-bend@0.1.1.0
Import: import yaml-for-bend@0.1.1.0/value.bend as Value
Lines 187-189 of yaml-for-bend@0.1.1.0/value.bend: https://jend.leeeet.dev/read.txt?path=yaml-for-bend@0.1.1.0/value.bend&start_line=187&end_line=189

import Base

# The value under +key+, or null.
def at(v: Yaml, key: String) -> Yaml:
  Maybe.default(&2, Yaml, get(v, key), Null{})

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe.default
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/value.bend&name=Yaml
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/value.bend&name=get