Using JSNI to create Labeled Marker cause Object function MarkerLabel_(marker, crossURL, handCursorURL){ …} has no method 'getSharedCross'

I tried to create a Label Marker by using JSNI to call google-maps-utility-library-v3 's markerwithlabel.js . However, I always receive this exception :

com.google.gwt.core.client.JavaScriptException: (TypeError) @com.gwt.map.client.GWTMap::setLabeledMarker(Lcom/google/gwt/maps/client/base/LatLng;Lcom/google/gwt/maps/client/MapImpl;)([JavaScript object(51), JavaScript object(19)]): Object function MarkerLabel_(marker, crossURL, handCursorURL){ ...} has no method 'getSharedCross'

Here is the JSNI method I have created :

    public final native void setLabeledMarker(LatLng ll,MapImpl myMap)  /*-{     var marker = new $wnd.MarkerWithLabel({     position: ll,     draggable: true,     raiseOnDrag: true,     labelContent: "Hello",     labelAnchor: new $wnd.google.maps.Point(22, 0),     labelClass: "labels", // the CSS class for the label     labelStyle: {opacity: 1.0}   });     marker.setMap(myMap); }-*/; 

I'm using Branflake's GWT Map version 3.8.1 and google-maps-utility-library-v3 's markerwithlabel.js

Please help to give your advice

 

 

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