GMap Marker Selection

package org.primefaces.showcase.view.data.gmap;

import org.primefaces.event.map.OverlaySelectEvent;
import org.primefaces.model.map.DefaultMapModel;
import org.primefaces.model.map.LatLng;
import org.primefaces.model.map.MapModel;
import org.primefaces.model.map.Marker;

import java.io.Serializable;

import jakarta.annotation.PostConstruct;
import jakarta.faces.application.FacesMessage;
import jakarta.faces.context.FacesContext;
import jakarta.faces.view.ViewScoped;
import jakarta.inject.Named;

@Named
@ViewScoped
public class MarkerSelectionView implements Serializable {

    private MapModel<Long> simpleModel;

    private Marker<Long> marker;

    @PostConstruct
    public void init() {
        simpleModel = new DefaultMapModel<>();

        //Shared coordinates
        LatLng coord1 = new LatLng(36.879466, 30.667648);
        LatLng coord2 = new LatLng(36.883707, 30.689216);
        LatLng coord3 = new LatLng(36.879703, 30.706707);
        LatLng coord4 = new LatLng(36.885233, 30.702323);

        //Basic marker
        simpleModel.addOverlay(new Marker<>(coord1, "Konyaalti", 1L));
        simpleModel.addOverlay(new Marker<>(coord2, "Ataturk Parki", 2L));
        simpleModel.addOverlay(new Marker<>(coord3, "Karaalioglu Parki", 3L));
        simpleModel.addOverlay(new Marker<>(coord4, "Kaleici", 4L));
    }

    public MapModel<Long> getSimpleModel() {
        return simpleModel;
    }

    public void onMarkerSelect(OverlaySelectEvent<Long> event) {
        marker = (Marker) event.getOverlay();

        FacesContext.getCurrentInstance().addMessage(null,
                new FacesMessage(FacesMessage.SEVERITY_INFO,
                        "Marker " + marker.getData() + " Selected", marker.getTitle()));
    }

    public Marker<Long> getMarker() {
        return marker;
    }
}