* The value is, e.g. -1 <br>
     * comment: Offset for query highlight fragments.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getQueryHighlightFragmentOffset();

    /**
     * Get the value for the key 'query.highlight.fragment.offset' as {@link Integer}. <br>
     * The value is, e.g. -1 <br>
     * comment: Offset for query highlight fragments.