Helper function used in service implementations to finish handling invocations of the <link linkend="gdbus-method-org-gnome-Shell-Screenshot.
PickColor">PickColor</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 | |
| result |
Parameter to return. |