} else {
            testNg.setTestClasses(testClasses.toArray(new Class<?>[0]));
        }
        testNg.addListener((Object) adaptListener(new TestNGTestResultProcessorAdapter(resultProcessor, idGenerator, clock)));
        testNg.run();
    }

    /**
     * The setter for {@code configFailurePolicy} has a different signature depending on TestNG version.