defaultQuery.add(builder.apply(fessConfig.getIndexFieldContent() + "_" + lang,
                    fessConfig.getQueryBoostContentLangAsDecimal().floatValue()));
            if (importantContantLangBoost >= 0.0f) {
                defaultQuery.add(builder.apply(fessConfig.getIndexFieldImportantContent() + "_" + lang, importantContantLangBoost));
            }

     * @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 getQueryBoostContentLangAsDecimal();

    /**
     * Get the value for the key 'query.boost.important_content'. <br>
     * The value is, e.g. -1.0 <br>
     * comment: Boost value for important content field in queries.