excludeFilterCache = createFilterCache(EXCLUDE);
    }

    protected LoadingCache<String, List<Pattern>> createFilterCache(final String type) {
        return CacheBuilder.newBuilder()//
                .expireAfterWrite(filterCacheExpireAfterWrite, TimeUnit.SECONDS)//
                .build(new CacheLoader<String, List<Pattern>>() {

                    @Override
                    public List<Pattern> load(final String key) {

    private static final Logger logger = LogManager.getLogger(PluginHelper.class);

    protected LoadingCache<ArtifactType, Artifact[]> availableArtifacts = CacheBuilder.newBuilder().maximumSize(10)
            .expireAfterWrite(5, TimeUnit.MINUTES).build(new CacheLoader<ArtifactType, Artifact[]>() {
                @Override
                public Artifact[] load(final ArtifactType key) {