@Override
    protected String selectorHandler(final MetaDataRegisterDTO metaDataDTO) {
        return GsonUtils.getInstance().toJson(SpringCloudSelectorHandle.builder().serviceId(metaDataDTO.getAppName()).build());
    }
@Test
    public void testSelectorHandler() {
        MetaDataRegisterDTO metaDataRegisterDTO = MetaDataRegisterDTO.builder().appName("testSelectorHandler").build();
        assertEquals("{\"serviceId\":\"testSelectorHandler\",\"gray\":false}", 
                shenyuClientRegisterSpringCloudService.selectorHandler(metaDataRegisterDTO));
    }