Helper function used in service implementations to finish handling invocations of the <link linkend="gdbus-method-org-sigxcpu-Feedback-Haptic.
Vibrate">Vibrate</link> D-Bus method. If you instead want to finish handling an invocation by returning an error,
use return_error or similar.
This method will free invocation, you cannot use it afterwards.
| this | |
| invocation | |
| success |
Parameter to return. |