public JetConfig getJetConfig() {
        return jetConfig;
    }
@Test
    public void when_instanceIsCreatedWithOverriddenDefaultConfiguration_then_defaultConfigurationIsNotChanged() {
        Config config = new Config();
        DataPersistenceConfig dataPersistenceConfig = new DataPersistenceConfig();
        dataPersistenceConfig.setEnabled(true);
        config.addMapConfig(getMapConfig("default", dataPersistenceConfig));
        config.getJetConfig().setEnabled(true);

        HazelcastInstance instance = createHazelcastInstance(config);
        MapConfig otherMapConfig = ((MapProxyImpl) instance.getMap("otherMap")).getMapConfig();
        assertTrue(otherMapConfig.getDataPersistenceConfig().isEnabled());
        assertEquals(DEFAULT_BACKUP_COUNT, otherMapConfig.getBackupCount());
    }