How to use the @here/harp-map-controls.LongPressHandler function in @here/harp-map-controls

function addMouseEventListener(mapView: MapView) {
        const canvas = mapView.canvas;
        mapView.zoomLevel = 15.5;

        // tslint:disable:no-unused-expression
        new LongPressHandler(canvas, event => {
            // snippet:harp_gl_threejs_add_simple_object_1.ts
            // Get the position of the mouse in geo space.
            const geoPosition = mapView.getGeoCoordinatesAt(event.pageX, event.pageY);
            if (geoPosition === null) {
                return;
            }
            // end:harp_gl_threejs_add_simple_object_1.ts

            // snippet:harp_gl_threejs_add_simple_object_2.ts
            const cube = createPinkCube();
            cube.geoPosition = geoPosition;
            mapView.mapAnchors.add(cube);
            // end:harp_gl_threejs_add_simple_object_2.ts

            // end:harp_gl_threejs_add_simple_object_3.ts
            // Request an update once the cube [[MapObject]] is added to [[MapView]].

map.lookAt(NY, 2000, 50);

        // Add an UI.
        const ui = new MapControlsUI(mapControls);
        canvas.parentElement!.appendChild(ui.domElement);

        // Resize the mapView to maximum.
        map.resize(window.innerWidth, window.innerHeight);

        // React on resize events.
        window.addEventListener("resize", () => {
            map.resize(window.innerWidth, window.innerHeight);
        });

        // tslint:disable:no-unused-expression
        new LongPressHandler(canvas, event => {
            // snippet:harp_gl_threejs_raycast_0.ts
            const pickResults = map.intersectMapObjects(event.pageX, event.pageY);
            if (pickResults.length === 0) {
                return;
            }
            // end:harp_gl_threejs_raycast_0.ts

            // snippet:harp_gl_threejs_raycast_1.ts
            const worldPoint = new THREE.Vector3();
            // Pick results is sorted by distance, so we choose the first point in 3D.
            for (const pick of pickResults) {
                if (pick.point instanceof THREE.Vector3) {
                    worldPoint.copy(pick.point);
                    // Points returned from the intersectMapObjects are in local space, hence we
                    // transform to actual world space.
                    worldPoint.add(map.worldCenter);