final QueryFieldConfig queryFieldConfig = ComponentUtil.getQueryFieldConfig();
            final FessConfig fessConfig = ComponentUtil.getFessConfig();

            if (offset > fessConfig.getQueryMaxSearchResultOffsetAsInteger()) {
                throw new ResultOffsetExceededException("The number of result size is exceeded.");
            }

     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     * @throws NumberFormatException When the property is not integer.
     */
    Integer getQueryMaxSearchResultOffsetAsInteger();

    /**
     * Get the value for the key 'query.additional.default.fields'. <br>
     * The value is, e.g.  <br>