* (ie a process did not crash while updating the target file).
     *
     * Returns false if no mutation method has ever been called for the target file.
     */
    boolean getUnlockedCleanly();

    /**
     * Returns true if the given file is used by this lock.
     */
    boolean isLockFile(File file);

    /**
     * Closes this lock, releasing the lock and any resources associated with it.

        return properties;
    }

    private class Initializer implements CacheInitializationAction {
        @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);

        }

        @Override
        public boolean isLockFile(File file) {
            return file.equals(lockFile);
        }

        @Override
        public boolean getUnlockedCleanly() {
            assertOpen();
            return !lockState.isDirty();
        }

        @Override
        public State getState() {
            assertOpen();
            return lockState;