* Parses sort configuration like "count.desc" or "term.asc" into appropriate bucket ordering.
     *
     * @return the BucketOrder instance representing the sort configuration
     */
    public BucketOrder getBucketOrder() {
        if (StringUtil.isNotBlank(sort)) {
            final String[] values = sort.split("\\.");
            final boolean asc;
            if (values.length > 1) {