presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcColumnHandle.java/JdbcColumnHandle/build
class JdbcColumnHandle:        public JdbcColumnHandle build()
        {
            return new JdbcColumnHandle(
                    columnName,
                    jdbcTypeHandle,
                    columnType,
                    nullable,
                    comment);
        }