/**
     * Get blacklisted paths
     */
    public Set<String> getBlacklistedPaths() {
        return Collections.unmodifiableSet(blacklistedPaths);
    }

    /**
     * Get whitelisted paths
     */
    public Set<String> getWhitelistedPaths() {
        return Collections.unmodifiableSet(whitelistedPaths);
    }

    /**
     * Clear all blacklisted paths
     */
    public void clearBlacklist() {

                result.add(String.format("%s (%s, age: %d ms)", holder.resourceId, holder.resourceType, holder.getAge()));
            }
        }

        return Collections.unmodifiableSet(result);
    }

    /**
     * Configure resource manager
     *
     * @param maxAge maximum resource age in milliseconds
     * @param cleanupInterval cleanup interval in milliseconds