* @param url The URL to the geoJSON file you want to create a layer from.
* @return A Vector layouer
*/
public static Vector createLayerFromJson(String layerName, String url) {
FixedStrategyOptions fOptions = new FixedStrategyOptions();
FixedStrategy fStrategy = new FixedStrategy(fOptions);
GeoJSON geoJson = new GeoJSON();
HTTPProtocolOptions httpProtOptions = new HTTPProtocolOptions();