anchor.diff:    ready() {
       super.ready();
       _initMap();
  +    _InitDefaultIconStyle();
  +    _InitMarkerLayers();
       _InitListeners();
     }
     
  
positive.code: 
  import 'package:polymer/polymer.dart';
  import 'package:js_wrapping/js_wrapping.dart';
  
  import 'leafletjs_js_bindings/map.dart' as L;
  import 'leafletjs_js_bindings/ILayer.dart' as L;
  
negative.code:       notifyChanges();
      });
    }
    
    void AddMarker(L.LatLng pnt, [Map<String, dynamic> params = null]) {
      L.Marker marker = new L.Marker(L.LatLng.FromList(SpbCoord), toJs({ 'icon' : toJs(defMarkerIcon)}));
      _markersGroup.addLayer(marker);
    }
    
    void ClearAllMarkers() {
      _markersGroup.clearLayers();
    }
  
  }
  