Swimlane objects (aka: Swimlanes) in BPMN are rectangular bins that stand for contributors of a business process. A swimlane may possibly consists of movement objects which have been executed by that lane (participant), aside from black box that should have an empty system (We are going to mention black box https://andrepwcte.win-blog.com/3077128/not-known-details-about-bpmn-homework-help