/** Fess LLM log level configuration key. */
    public static final String FESS_LLM_LOG_LEVEL = "fess.llm.log.level";

    /** Track total hits configuration key. */
    public static final String TRACK_TOTAL_HITS = "track_total_hits";

    /** System property prefix for Fess configuration. */
    public static final String SYSTEM_PROP_PREFIX = "fess.system.";

    /** Configuration prefix for Fess settings. */

        /**
         * Sets the track total hits configuration.
         *
         * @param trackTotalHits the track total hits setting
         * @return this builder for method chaining
         */
        public SearchConditionBuilder trackTotalHits(final String trackTotalHits) {
            this.trackTotalHits = trackTotalHits;
            return this;
        }

        /**