PARSER.declareField(StoredLtrQueryBuilder::params, XContentParser::map, PARAMS, ObjectParser.ValueType.OBJECT);
        PARSER.declareStringArray(StoredLtrQueryBuilder::activeFeatures, ACTIVE_FEATURES);
        PARSER.declareFloat(QueryBuilder::boost, AbstractQueryBuilder.BOOST_FIELD);
        PARSER.declareString(QueryBuilder::queryName, AbstractQueryBuilder.NAME_FIELD);
    }

    private String modelName;
    private String featureSetName;