private IndexedCache<K, V> initPersistentCache() {
        return cacheAccessCoordinator.createCache(persistentCacheName, keySerializer, valueSerializer);
    }

    public V lookup(final K key) {
        assertKeyNotNull(key);

        V result = cacheAccessCoordinator.useCache(() -> {
            V found = getIndexedCache().getIfPresent(key);
            if (found == null) {
                return null;

    }

    @Override
    public void store(final ArtifactAtRepositoryKey key, final File artifactFile, HashCode moduleDescriptorHash) {
        assertArtifactFileNotNull(artifactFile);
        assertKeyNotNull(key);
        storeInternal(key, createEntry(artifactFile, moduleDescriptorHash));
    }

    private DefaultCachedArtifact createEntry(File artifactFile, HashCode moduleDescriptorHash) {

    }

    @Override
    public void store(final K key, final File artifactFile, ExternalResourceMetaData externalResourceMetaData) {
        assertArtifactFileNotNull(artifactFile);
        assertKeyNotNull(key);

        storeInternal(key, createEntry(artifactFile, externalResourceMetaData));
    }

    @Override
    public void storeMissing(K key) {