How to use the link-lib.RENDER_CLASS_NAME.sI function in link-lib

it("registers built-in functions", () => {
        // tslint:disable-next-line:no-console
        const Comp: any = console.log;
        Comp.type = defaultNS.ex("TestClass");
        const [ registration ] = register(Comp);

        expect(registration).toHaveProperty("component", Comp);
        expect(registration).toHaveProperty("property", RENDER_CLASS_NAME.sI);
        expect(registration).toHaveProperty("topology", DEFAULT_TOPOLOGY.sI);
        expect(registration).toHaveProperty("type", defaultNS.ex("TestClass").sI);
    });

it("registers a class component", () => {
        class Comp extends Component {
            public static type = defaultNS.ex("TestClass");

            public render() { return null; }
        }
        const [ registration ] = register(Comp);

        expect(registration).toHaveProperty("component", Comp);
        expect(registration).toHaveProperty("property", RENDER_CLASS_NAME.sI);
        expect(registration).toHaveProperty("topology", DEFAULT_TOPOLOGY.sI);
        expect(registration).toHaveProperty("type", defaultNS.ex("TestClass").sI);
    });