@Override
protected void doStart() throws Exception {
Hashtable<String, Object> props = new Hashtable<String, Object>();
props.put("url.handler.protocol", "blueprint");
register(URLStreamHandlerService.class, new BlueprintURLHandler(), props);
register(new Class[] { ArtifactUrlTransformer.class, ArtifactListener.class },
new BlueprintDeploymentListener());
}