presto-main/src/main/java/io/prestosql/connector/system/jdbc/SuperTypeJdbcTable.java/SuperTypeJdbcTable/cursor
class SuperTypeJdbcTable:    @Override
    public RecordCursor cursor(ConnectorTransactionHandle transactionHandle, ConnectorSession session, TupleDomain<Integer> constraint)
    {
        return InMemoryRecordSet.builder(METADATA).build().cursor();
    }