public ReferenceBuilder<T> interfaceClass(Class<?> interfaceClass) {
        this.interfaceClass = interfaceClass;
        return getThis();
    }
@Test
    void interfaceClass() {
        ReferenceBuilder builder = new ReferenceBuilder();
        builder.interfaceClass(DemoService.class);
        Assertions.assertEquals(DemoService.class, builder.build().getInterfaceClass());
    }