Code review comment for lp:~nick-dedekind/qtmir/lp1352977

> > 109 + Q_PROPERTY(QQmlListProperty<qtmir::MirSurfaceItem> promptSurfaces
> > READ promptSurfaces NOTIFY promptSurfacesChanged DESIGNABLE false)
> >
> > You should update unity-api accordingly.
>
> This can be added later. It's not a requirement for this MP and shouldn't be
> considered a blocker.

That's the right time to add it. Otherwise "later" can very well mean "never".