private static ServiceRegistration<?> registerEventHandler(final BundleContext bundleContext,
final BlueprintListener listener) {
return bundleContext.registerService(BlueprintListener.class.getName(), listener, new Hashtable<>());
private static ServiceRegistration<?> registerEventHandler(final BundleContext bundleContext,
final BlueprintListener listener) {
return bundleContext.registerService(BlueprintListener.class.getName(), listener, new Hashtable<>());