boolean isJava9 = Boolean.parseBoolean(System.getProperty("isJava9"));
                    String[] splitTestRuntimeClasspath = splitClasspath(System.getProperty("testRuntimeClasspath"));
                    if (isJava9) {
                        String[] splitCliClasspath = splitClasspath(System.getProperty("java.class.path"));

                        // The worker jar is first on the classpath.