How to call c++ method on QObject from Repeater delegate?

[KrabQT]

I noticed that unfortunately, if i have Q_PROPERTY of type QQmlListProperty<Customer> and used is as model in Repeater, then in that Repeater delegate, i can access just Customer properties AND NOT METHODS (even if they are marked by Q_INVOKABLE or if it is public slot). Why??? Is there any trick how do it easily?
Currently in ListView delegate, i am using something like ListView.view.model[index].method(), but it looks bad...