gi-wnck-3.0.9: Wnck.overrides

set-attr Wnck/Screen/get_active_window/@return-value nullable 1
set-attr Wnck/Screen/get_active_workspace/@return-value nullable 1

set-attr Wnck/ScreenClass/active_window_changed/@parameters/previous_window nullable 1

set-attr Wnck/Window/get/@return-value nullable 1