persistentCacheConfigurations.getReleasedWrappers().getRemoveUnusedEntriesOlderThan().value(getReleasedWrappers().getRemoveUnusedEntriesOlderThan());
        persistentCacheConfigurations.getSnapshotWrappers().getRemoveUnusedEntriesOlderThan().value(getSnapshotWrappers().getRemoveUnusedEntriesOlderThan());
        persistentCacheConfigurations.getDownloadedResources().getRemoveUnusedEntriesOlderThan().value(getDownloadedResources().getRemoveUnusedEntriesOlderThan());

    /**
     * Configures the timestamp before which an unused entry will be removed from the cache.
     *
     * See {@link #setRemoveUnusedEntriesAfterDays(int)}.
     */
    Property<Long> getRemoveUnusedEntriesOlderThan();