$ xmllint --noout --schema http://www.kde.org/standards/kxmlgui/1.0/kxmlgui.xsd testui.rc
testui.rc:27: element State: Schemas validity error : Element '{http://www.kde.org/standards/kxmlgui/1.0}State': This element is not expected. Expected is ( {http://www.kde.org/standards/kxmlgui/1.0}ActionProperties ).
testui.rc fails to validate