Bug in JDBC driver V. 7.0 ?

When I call the method getTableTypes() in java.sql.DatabaseMetaData,
all that's returned is:

SYSTEM INDEX.

The code for org.posgresql.DatabaseMetaData suggest that I should get at least

/**
* Get the table types available in this database. The results
* are ordered by table type.
*
* <P>The table type is:
* <OL>
* <LI><B>TABLE_TYPE</B> String => table type. Typical types are "TABLE",
* "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY",
* "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
* </OL>
*
* @return ResultSet each row has a single String column that is a
* table type
*/

but not the one (only) I get returned

snip:

java.sql.ResultSet rs = dbmd.getTableTypes ();

while (rs.next())
System.out.println(rs.getString(1));

just to rule out a codeing problem

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