Declares that prepared_stmt is a prepared statement object associated to gda_stmt within the connection
(meaning the connection increments the reference counter of prepared_stmt).
If gda_stmt changes or is destroyed, the the association will be lost and the connection will lose the reference it has on
prepared_stmt.
| this |
a Connection object |
| gda_stmt |
a Statement object |
| prepared_stmt |
a prepared statement object (as a PStmt object, or more likely a descendant) |