@Override
        public boolean requiresInitialization(FileLock lock) {
            if (!lock.getUnlockedCleanly()) {
                if (lock.getState().canDetectChanges() && !lock.getState().isInInitialState()) {
                    LOGGER.warn("Invalidating {} as it was not closed cleanly.", DefaultPersistentDirectoryCache.this);
                }
                return true;
            }