How to use the @uipath/angular/testing.EventGenerator.keyUp function in @uipath/angular

it('should close if Esc is pressed', () => {
            fixture.detectChanges();
            const display = fixture.debugElement.query(By.css('.display'));
            display.nativeElement.dispatchEvent(
                EventGenerator.keyDown(Key.Enter),
            );

            fixture.detectChanges();

            expect(uiSuggest.isOpen).toBeTruthy();

            const itemContainer = fixture.debugElement.query(By.css('.item-list-container'));

            itemContainer.nativeElement.dispatchEvent(
                EventGenerator.keyUp(Key.Escape),
            );

            expect(uiSuggest.isOpen).toBeFalsy();
        });