As we discussed in T7469 with V40,
need to be renamed to
for this work,
Efl.Ui.Model.Connect interface is changed as Efl.Ui.Bind,
and bind_property and bind_factory both method is supported by this interface.
bind_factory need Efl.Ui.Factory,
and Efl.Ui.Factory inheritted Efl.Ui.Bind,
so I little bit concerned about circular referencing, but so far, it works well.