How to use Bpmn2ReportServices?

Dear Community,

I am currently trying to analyze BPMN models and would like to receive all successors to an object (occurence), which are connected to the current object with a sequence flow. In the documentation I found the getBpmnSuccessors function of the Bpmn2ReportServices class, but I don't know how to access it. So my question is: How do I get an instance of the Bpmn2ReportServices class in a report?

Thanks in advance!