final DefaultQueryBuilderFunction builder) {
        final DefaultQueryBuilder defaultQuery = createDefaultQueryBuilder();
        defaultQuery.add(builder.apply(fessConfig.getIndexFieldTitle(), fessConfig.getQueryBoostTitleAsDecimal().floatValue()));
        defaultQuery.add(builder.apply(fessConfig.getIndexFieldContent(), fessConfig.getQueryBoostContentAsDecimal().floatValue()));

     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     * @throws NumberFormatException When the property is not decimal.
     */
    java.math.BigDecimal getQueryBoostTitleAsDecimal();

    /**
     * Get the value for the key 'query.boost.title.lang'. <br>
     * The value is, e.g. 1.0 <br>
     * comment: Boost value for title field with language in queries.