1. non-simplify mode:
```
dubbo://120.0.0.1:20880/org.apache.dubbo.demo.DemoService?key=value
```
the store path of ZK will be: `/dubbo/porg.apache.dubbo.demo.DemoService/url`

2. simplify mode:
```
dubbo://120.0.0.1:20880/org.apache.dubbo.demo.DemoService?key=value
```
the store path of ZK will be: `/dubbo/porg.apache.dubbo.demo.DemoService/url`

3. simplify mode with path specified:
```
dubbo://120.0.0.1:20880/path-value?key=value
```
the store path of ZK will be: `/dubbo/path-value/url`
public void testInterface1() throws Exception {
        Assertions.assertThrows(IllegalStateException.class, () -> {
            ServiceConfig<DemoService> service = new ServiceConfig<DemoService>();
            service.setInterface(DemoServiceImpl.class);
        });
    }
    @Test
    public void testInterface2() throws Exception {
        ServiceConfig<DemoService> service = new ServiceConfig<DemoService>();
        service.setInterface(DemoService.class);
        assertThat(service.getInterface(), equalTo(DemoService.class.getName()));
    }
    @Test
    public void testProvider() throws Exception {
        ServiceConfig service = new ServiceConfig();
        ProviderConfig provider = new ProviderConfig();
        service.setProvider(provider);
        assertThat(service.getProvider(), is(provider));
    }
    @Test
    public void testGeneric1() throws Exception {
        ServiceConfig service = new ServiceConfig();
        service.setGeneric(GENERIC_SERIALIZATION_DEFAULT);
        assertThat(service.getGeneric(), equalTo(GENERIC_SERIALIZATION_DEFAULT));
        service.setGeneric(GENERIC_SERIALIZATION_NATIVE_JAVA);
        assertThat(service.getGeneric(), equalTo(GENERIC_SERIALIZATION_NATIVE_JAVA));
        service.setGeneric(GENERIC_SERIALIZATION_BEAN);
        assertThat(service.getGeneric(), equalTo(GENERIC_SERIALIZATION_BEAN));
    }
    @Test