PGConnection pgconn = (PGConnection) conn;
org.postgresql.Connection pgconn = (org.postgresql.Connection) conn;
        public void addBoxen(Connection conn) {            PGConnection pgconn = (PGConnection) conn;            pgconn.addDataType("box3d", "org.postgis.PGbox3d");            pgconn.addDataType("box2d", "org.postgis.PGbox2d");        }