public static <T> void registerService(Class<T> clss, T service, Dictionary<String, ?> properties) {
if (bundleContext != null) {
bundleContext.registerService(clss, service, properties);
public static <T> void registerService(Class<T> clss, T service, Dictionary<String, ?> properties) {
if (bundleContext != null) {
bundleContext.registerService(clss, service, properties);