dispose method
void
dispose()
Implementation
void dispose() {
this.saveMarker = (String markerId, Marker marker) {};
this.deleteMarker = (String markerId) {};
this.clearMarkers = () {};
this.savePolyline = (String polylineId, Polyline polyline) {};
this.deletePolyline = (String polylineId) {};
this.clearPolylines = () {};
this.savePolygon = (String polygonId, Polygon polygon) {};
this.deletePolygon = (String polygonId) {};
this.clearPolygons = () {};
this.refeashUI = () {};
this.isDispose = true;
}