QLowEnergyServiceData::includedServices() has insufficient API

Why does the API describe included services as QLowEnergyServices, not QLowEnergyServiceDatas ?

The documentation states:

All objects in this list must have been returned from a call to \l QLowEnergyController::addService

This is an insufficient assumption. Assume a device setup where every service has an included service. By definition the current API would not be able to define an included service for the first to-be-published service.

Another good example is a device setup where service A includes service B and service B includes service A. Such circular dependencies are known and possible.