String QUERY_HIGHLIGHT_CONTENT_DESCRIPTION_FIELDS = "query.highlight.content.description.fields";

    /** The key of the configuration. e.g. true */
    String QUERY_HIGHLIGHT_BOUNDARY_POSITION_DETECT = "query.highlight.boundary.position.detect";

    /** The key of the configuration. e.g. query */
    String QUERY_HIGHLIGHT_TEXT_FRAGMENT_TYPE = "query.highlight.text.fragment.type";

    /** The key of the configuration. e.g. 3 */