Helper function used in service implementations to finish handling invocations of the <link linkend="gdbus-method-org-freedesktop-GeoClue2-Client.
Start">Start</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 |
A Client. |
| invocation |
A DBusMethodInvocation. |