Open-Source-PhotoVoltaics-Libraryfor-Systemic-Investigations.pdf

Hello,
I'm beginner in openmodelica, so I want to create my own photovoltaic cell with parallel and series resistor, so there exist in photovoltaics library a model about cell but it is just a basic model, so How I can add a series and parallel resistor in the basic model existe can you help me please