public ReferenceBuilder<T> interfaceName(String interfaceName) {
        this.interfaceName = interfaceName;
        return getThis();
    }
@Test
    void interfaceName() {
        ReferenceBuilder builder = new ReferenceBuilder();
        builder.interfaceName(DemoService.class.getName());
        Assertions.assertEquals(
                "org.apache.dubbo.config.api.DemoService", builder.build().getInterface());
    }