signal callback delegate or function to connect
void callback(string summary, string body_, vte.terminal.Terminal terminal)
summary The summary (optional)
body_ Extra optional text (optional)
terminal 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 NotificationReceived signal.
Emitted when a process running in the terminal wants to send a notification to the desktop environment.