/* LICENSE BEGIN
    This file is part of the SixtyFPS Project -- https://sixtyfps.io
    Copyright (c) 2020 Olivier Goffart <olivier.goffart@sixtyfps.io>
    Copyright (c) 2020 Simon Hausmann <simon.hausmann@sixtyfps.io>

    SPDX-License-Identifier: GPL-3.0-only
    This file is also available under commercial licensing terms.
    Please contact info@sixtyfps.io for more information.
LICENSE END */
SuperSimple := Rectangle {

    opacity: 0.5;
//          ^error{The opacity property cannot be used on the root element}

    Rectangle {
        opacity: false;
//              ^error{Cannot convert bool to float}
    }

}