{
  "source": "https://github.com/aontu-lang/aontu/blob/main/test/spec/errcodes.tsv",
  "code": "pref_not_instance",
  "class": "compat",
  "class_meaning": "a change breaks an earlier version",
  "class_action": "that is `aontu subsume` / `aontu breaking` talking: widen the change or version it",
  "since": "0.53.0",
  "family": false,
  "ahead_of_documented_engine": false,
  "url": "https://aontu.dev/errors/pref_not_instance"
}