}

    default boolean isThumbnailEnabled() {
        return getSystemPropertyAsBoolean(Constants.THUMBNAIL_ENALBED_PROPERTY, false);
    }

    default void setIncrementalCrawling(final boolean value) {
        setSystemPropertyAsBoolean(Constants.INCREMENTAL_CRAWLING_PROPERTY, value);
    }

    default boolean isIncrementalCrawling() {