static void addAndClearPersistentMapLogFile(S progID, S persistenceName, Map map) {
  File f = persistentMapLogFile(progID, persistenceName);
  for (O _l : scanLog_safeUnstructure(f)) pcall {
    L l = cast _l;
    mapPut(map, first(l), second(l));
  }
  f.delete();
}