static ClickHouseRecordMapper of(ClickHouseDataConfig config, List<ClickHouseColumn> columns, Class<?> objClass) {
        return RecordMapperFactory.of(config, columns, objClass);
    }
Gets mapper to turn {@link ClickHouseRecord} into user-defined object.

@param config   non-null configuration
@param columns  non-null list of columns
@param objClass non-null class of the user-defined object
@return non-null user-defined object
clickhouse-data/src/main/java/com/clickhouse/data/ClickHouseRecordMapper.java