Plan.is.absent: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/lock/plan.bend as Plan
Lines 1251-1257 of ezx@1.11.0.0/src/lock/plan.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/lock/plan.bend&start_line=1251&end_line=1257

import Base

# whether nothing has answered for a key
def is.absent(found: Look) -> Bool:
  match found:
    case Absent{}:
      True{}
    case Found{_v}:
      False{}

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/lock/plan.bend&name=Look