public static String getMap(double lat, double lon, int sizeW, int sizeH, MapMarker... markers) {
   return _map.getURI(lat, lon, sizeW, sizeH, markers);
 }
 public static String getMap(double lat, double lon, int sizeW, int sizeH, int zoom) {
   return _map.getURI(lat, lon, sizeW, sizeH, zoom);
 }