public static HazelcastInstance newHazelcastInstance(Config config) {
        if (config == null) {
            config = Config.load();
        }

        return newHazelcastInstance(
                config,
                config.getInstanceName(),
                new DefaultNodeContext()
        );
    }
@Test
    public void test_NewInstance_configLoaded() {
        hazelcastInstance = HazelcastInstanceFactory.newHazelcastInstance(null);

        assertNotNull(hazelcastInstance.getConfig());
    }