pub trait XRTestMethods<D>where
    D: DomTypes,{
    // Required methods
    fn SimulateDeviceConnection(
        &self,
        init: &FakeXRDeviceInit,
        _can_gc: CanGc,
    ) -> Rc<<D as DomTypes>::Promise>;
    fn SimulateUserActivation(&self, f: Rc<Function<D>>, _can_gc: CanGc);
    fn DisconnectAllDevices(
        &self,
        _can_gc: CanGc,
    ) -> Rc<<D as DomTypes>::Promise>;
}