public List<Role> getAvailableRoleList() {
        return roleBhv.selectList(cb -> {
            cb.query().matchAll();
            cb.query().addOrderBy_Name_Asc();
            cb.paging(fessConfig.getPageRoleMaxFetchSizeAsInteger(), 1);
        });
    }

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

    /**
     * Get the value for the key 'page.group.max.fetch.size'. <br>
     * The value is, e.g. 1000 <br>
     * comment: Maximum number of group records to fetch per page.