How to model multiple Buildings supplied by one EnergyConversionSystem

I want to model multiple buildings that are supplied by one EnergyConversionSystem. I only want to model the conversion system and attach a timeseries to the system. I do not want to model the EnergyConversionSystem . EnergyFlow or the EmitterSystem in detail.

In previous version (I think) there was something like EnergyConversionSystem.provides where it was possible to link multiple CityObject. I do not see this link anymore.

I tried using EnergyDemand, but the link to CityObject with demands (in German: "verlangt") and demandedBy (in German: "wird verlangt von") is very confusing. Any ideas how to model that?

Suggestion: A direct link between EnergyConversionSystem and EnergyDemand (EnergyDemand -> isProvidedBy -> AbstractEnergyConversionSystem) would helpful.