How to use the @nationalbankbelgium/stark-core.StarkLanguages.NL_BE function in @nationalbankbelgium/stark-core

describe("LanguageSelectorComponent", () => {
	let component: StarkLanguageSelectorComponent;
	let hostComponent: TestHostComponent;
	let hostFixture: ComponentFixture;

	let appMetadata: StarkApplicationMetadata;
	appMetadata = new StarkApplicationMetadataImpl();
	appMetadata.supportedLanguages = [StarkLanguages.EN_US, StarkLanguages.FR_BE, StarkLanguages.NL_BE];

	describe("on initialization", () => {
		const mockSessionService: MockStarkSessionService = new MockStarkSessionService();
		mockSessionService.getCurrentLanguage.and.returnValue(of("fr"));

		beforeEach(async(() => {
			return compileComponent(mockSessionService);
		}));

		beforeEach(() => {
			initializeComponent();
		});

		it("should set internal component properties", () => {
			expect(hostFixture).toBeDefined();
			expect(component).toBeDefined();