signal callback delegate or function to connect
void callback(void* oldDsn, gda.config.Config config)
oldDsn a #GdaDsnInfo (optional)
config the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to DsnToBeRemoved signal.
Gets emitted whenever a DSN is about to be removed