@Override
    public void onStart(ITestContext paramITestContext) {
        paramITestContext.setAttribute(REPORT_MODELS_ATTRIBUTE, new ConcurrentHashMap<String, ReportModel>());
    }
TestNG Test listener to enable JGiven for a test class.
jgiven-testng/src/main/java/com/tngtech/jgiven/testng/ScenarioTestListener.java