How to add participant element in the Fluent Builder API

I am able to create a BPMN model using Fluent Builder API but need to implement the participant (Pool and lanes). Please share the sample code if possible

By the way, I need to implement the participant (Pool and lanes) to solve my problem, that is transforming the EPC diagram into the BPMN diagram automatically. based on this paper (https://bpt.hpi.uni-potsdam.de/foswiki/pub/Public/OryxResearch/TransformEPC2BPMN.pdf ) I have to translate the Organization Unit / Position elements into participants at BPMN.

Please help me.