Test Suite integration in a custom plugin

I’m building a custom plugin to integrate Katalon Studio with SpiraTeam. I’ve successfully added integration properties to capture Test Case and Test Suite identifiers to match those in SpiraTeam and have also successfully uploaded Test Run results for Test Cases when a Test Suite completes. But, I can’t see a way to access the TestSuiteEntity object in the event listener so I can’t update SpiraTeam with the correct Test Suite identifier (known as a Test Set in SpiraTeam). I can see that there’s a TestSuiteCollectionController but there doesn’t seem to be a TestSuiteController so no way to look up Test Suites from within the plugin.